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Finding the Fourth Proportional to 73,862.70, 101,929.21 and 42,030.91

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Solution

The fourth proportional to 73,862.70, 101,929.21 and 42,030.91 is: 58,001.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,862.70 : 101,929.21 = 42,030.91 : x
  2. Step 2: Convert to fraction form
    73,862.70/101,929.21 = 42,030.91/x
  3. Step 3: Cross multiply
    73,862.70x = 101,929.21 × 42,030.91
  4. Step 4: Simplify right side
    73,862.70x = 4,284,177,451.88
  5. Step 5: Solve for x
    x = 4,284,177,451.88/73,862.70
  6. Step 6: Final answer
    x = 58,001.91

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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.