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Finding the Fourth Proportional to 922,374, 1,272,876.15 and 519,966

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Solution

The fourth proportional to 922,374, 1,272,876.15 and 519,966 is: 717,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,374 : 1,272,876.15 = 519,966 : x
  2. Step 2: Convert to fraction form
    922,374/1,272,876.15 = 519,966/x
  3. Step 3: Cross multiply
    922,374x = 1,272,876.15 × 519,966
  4. Step 4: Simplify right side
    922,374x = 661,852,320,210.90
  5. Step 5: Solve for x
    x = 661,852,320,210.90/922,374
  6. Step 6: Final answer
    x = 717,553.10

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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.