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Finding the Fourth Proportional to 938,628,216.70, 1,316,800,481.30 and 938,628,216.70

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Solution

The fourth proportional to 938,628,216.70, 1,316,800,481.30 and 938,628,216.70 is: 1,316,800,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,628,216.70 : 1,316,800,481.30 = 938,628,216.70 : x
  2. Step 2: Convert to fraction form
    938,628,216.70/1,316,800,481.30 = 938,628,216.70/x
  3. Step 3: Cross multiply
    938,628,216.70x = 1,316,800,481.30 × 938,628,216.70
  4. Step 4: Simplify right side
    938,628,216.70x = 1,235,986,087,512,320,768
  5. Step 5: Solve for x
    x = 1,235,986,087,512,320,768/938,628,216.70
  6. Step 6: Final answer
    x = 1,316,800,481.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.