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Finding the Fourth Proportional to 625,712.76, 938,520.18 and 176,415.48

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Solution

The fourth proportional to 625,712.76, 938,520.18 and 176,415.48 is: 264,609.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,712.76 : 938,520.18 = 176,415.48 : x
  2. Step 2: Convert to fraction form
    625,712.76/938,520.18 = 176,415.48/x
  3. Step 3: Cross multiply
    625,712.76x = 938,520.18 × 176,415.48
  4. Step 4: Simplify right side
    625,712.76x = 165,569,488,044.39
  5. Step 5: Solve for x
    x = 165,569,488,044.39/625,712.76
  6. Step 6: Final answer
    x = 264,609.42

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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.