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Finding the Fourth Proportional to 624,592,420.82, 861,946,967.13 and 342,332,603.30

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Solution

The fourth proportional to 624,592,420.82, 861,946,967.13 and 342,332,603.30 is: 472,424,159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,592,420.82 : 861,946,967.13 = 342,332,603.30 : x
  2. Step 2: Convert to fraction form
    624,592,420.82/861,946,967.13 = 342,332,603.30/x
  3. Step 3: Cross multiply
    624,592,420.82x = 861,946,967.13 × 342,332,603.30
  4. Step 4: Simplify right side
    624,592,420.82x = 295,072,549,164,152,448
  5. Step 5: Solve for x
    x = 295,072,549,164,152,448/624,592,420.82
  6. Step 6: Final answer
    x = 472,424,159.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.