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Finding the Fourth Proportional to 100,935.32, 139,346.61 and 60,658.88

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Solution

The fourth proportional to 100,935.32, 139,346.61 and 60,658.88 is: 83,742.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,935.32 : 139,346.61 = 60,658.88 : x
  2. Step 2: Convert to fraction form
    100,935.32/139,346.61 = 60,658.88/x
  3. Step 3: Cross multiply
    100,935.32x = 139,346.61 × 60,658.88
  4. Step 4: Simplify right side
    100,935.32x = 8,452,609,294.40
  5. Step 5: Solve for x
    x = 8,452,609,294.40/100,935.32
  6. Step 6: Final answer
    x = 83,742.83

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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.