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Finding the Fourth Proportional to 65,179.40, 89,901.10 and 59,819.11

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Solution

The fourth proportional to 65,179.40, 89,901.10 and 59,819.11 is: 82,507.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,179.40 : 89,901.10 = 59,819.11 : x
  2. Step 2: Convert to fraction form
    65,179.40/89,901.10 = 59,819.11/x
  3. Step 3: Cross multiply
    65,179.40x = 89,901.10 × 59,819.11
  4. Step 4: Simplify right side
    65,179.40x = 5,377,803,415.72
  5. Step 5: Solve for x
    x = 5,377,803,415.72/65,179.40
  6. Step 6: Final answer
    x = 82,507.71

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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.