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Finding the Fourth Proportional to 84,560.41, 126,748.91 and 42,338.68

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Solution

The fourth proportional to 84,560.41, 126,748.91 and 42,338.68 is: 63,462.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,560.41 : 126,748.91 = 42,338.68 : x
  2. Step 2: Convert to fraction form
    84,560.41/126,748.91 = 42,338.68/x
  3. Step 3: Cross multiply
    84,560.41x = 126,748.91 × 42,338.68
  4. Step 4: Simplify right side
    84,560.41x = 5,366,381,540.84
  5. Step 5: Solve for x
    x = 5,366,381,540.84/84,560.41
  6. Step 6: Final answer
    x = 63,462.10

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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.