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Finding the Fourth Proportional to 664,303,661.70, 996,455,492.55 and 626,039,909.70

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Solution

The fourth proportional to 664,303,661.70, 996,455,492.55 and 626,039,909.70 is: 939,059,864.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,303,661.70 : 996,455,492.55 = 626,039,909.70 : x
  2. Step 2: Convert to fraction form
    664,303,661.70/996,455,492.55 = 626,039,909.70/x
  3. Step 3: Cross multiply
    664,303,661.70x = 996,455,492.55 × 626,039,909.70
  4. Step 4: Simplify right side
    664,303,661.70x = 623,820,906,576,071,040
  5. Step 5: Solve for x
    x = 623,820,906,576,071,040/664,303,661.70
  6. Step 6: Final answer
    x = 939,059,864.55

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Double scale
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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.