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Finding the Fourth Proportional to 625,053.50, 862,569.16 and 353,116.45

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Solution

The fourth proportional to 625,053.50, 862,569.16 and 353,116.45 is: 487,298.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,053.50 : 862,569.16 = 353,116.45 : x
  2. Step 2: Convert to fraction form
    625,053.50/862,569.16 = 353,116.45/x
  3. Step 3: Cross multiply
    625,053.50x = 862,569.16 × 353,116.45
  4. Step 4: Simplify right side
    625,053.50x = 304,587,359,658.68
  5. Step 5: Solve for x
    x = 304,587,359,658.68/625,053.50
  6. Step 6: Final answer
    x = 487,298.06

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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.