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Finding the Fourth Proportional to 518,812.50, 715,972.19 and 292,458

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Solution

The fourth proportional to 518,812.50, 715,972.19 and 292,458 is: 403,598.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,812.50 : 715,972.19 = 292,458 : x
  2. Step 2: Convert to fraction form
    518,812.50/715,972.19 = 292,458/x
  3. Step 3: Cross multiply
    518,812.50x = 715,972.19 × 292,458
  4. Step 4: Simplify right side
    518,812.50x = 209,391,793,280.73
  5. Step 5: Solve for x
    x = 209,391,793,280.73/518,812.50
  6. Step 6: Final answer
    x = 403,598.20

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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.