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Finding the Fourth Proportional to 573,792,362.40, 861,326,272.80 and 315,512,036.40

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Solution

The fourth proportional to 573,792,362.40, 861,326,272.80 and 315,512,036.40 is: 473,618,723.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,792,362.40 : 861,326,272.80 = 315,512,036.40 : x
  2. Step 2: Convert to fraction form
    573,792,362.40/861,326,272.80 = 315,512,036.40/x
  3. Step 3: Cross multiply
    573,792,362.40x = 861,326,272.80 × 315,512,036.40
  4. Step 4: Simplify right side
    573,792,362.40x = 271,758,806,335,949,888
  5. Step 5: Solve for x
    x = 271,758,806,335,949,888/573,792,362.40
  6. Step 6: Final answer
    x = 473,618,723.68

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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.