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Finding the Fourth Proportional to 664,356,918.40, 996,535,377.60 and 626,093,166.40

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Solution

The fourth proportional to 664,356,918.40, 996,535,377.60 and 626,093,166.40 is: 939,139,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,356,918.40 : 996,535,377.60 = 626,093,166.40 : x
  2. Step 2: Convert to fraction form
    664,356,918.40/996,535,377.60 = 626,093,166.40/x
  3. Step 3: Cross multiply
    664,356,918.40x = 996,535,377.60 × 626,093,166.40
  4. Step 4: Simplify right side
    664,356,918.40x = 623,923,989,991,203,584
  5. Step 5: Solve for x
    x = 623,923,989,991,203,584/664,356,918.40
  6. Step 6: Final answer
    x = 939,139,749.60

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Half scale
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Double scale
Find fourth proportional to 664,356,919.40, 996,535,379.10 and 626,093,167.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.