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Finding the Fourth Proportional to 521,552,046.40, 782,328,069.60 and 521,552,046.40

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Solution

The fourth proportional to 521,552,046.40, 782,328,069.60 and 521,552,046.40 is: 782,328,069.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,552,046.40 : 782,328,069.60 = 521,552,046.40 : x
  2. Step 2: Convert to fraction form
    521,552,046.40/782,328,069.60 = 521,552,046.40/x
  3. Step 3: Cross multiply
    521,552,046.40x = 782,328,069.60 × 521,552,046.40
  4. Step 4: Simplify right side
    521,552,046.40x = 408,024,805,656,041,600
  5. Step 5: Solve for x
    x = 408,024,805,656,041,600/521,552,046.40
  6. Step 6: Final answer
    x = 782,328,069.60

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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.