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Finding the Fourth Proportional to 113,778.80, 156,947.09 and 73,516.30

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Solution

The fourth proportional to 113,778.80, 156,947.09 and 73,516.30 is: 101,408.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,778.80 : 156,947.09 = 73,516.30 : x
  2. Step 2: Convert to fraction form
    113,778.80/156,947.09 = 73,516.30/x
  3. Step 3: Cross multiply
    113,778.80x = 156,947.09 × 73,516.30
  4. Step 4: Simplify right side
    113,778.80x = 11,538,169,352.57
  5. Step 5: Solve for x
    x = 11,538,169,352.57/113,778.80
  6. Step 6: Final answer
    x = 101,408.78

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1.5x scale

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.