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Finding the Fourth Proportional to 124,691.61, 172,031.76 and 70,963.14

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Solution

The fourth proportional to 124,691.61, 172,031.76 and 70,963.14 is: 97,904.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,691.61 : 172,031.76 = 70,963.14 : x
  2. Step 2: Convert to fraction form
    124,691.61/172,031.76 = 70,963.14/x
  3. Step 3: Cross multiply
    124,691.61x = 172,031.76 × 70,963.14
  4. Step 4: Simplify right side
    124,691.61x = 12,207,913,869.33
  5. Step 5: Solve for x
    x = 12,207,913,869.33/124,691.61
  6. Step 6: Final answer
    x = 97,904.85

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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.