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Finding the Fourth Proportional to 113,713.56, 156,925.42 and 63,415.80

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Solution

The fourth proportional to 113,713.56, 156,925.42 and 63,415.80 is: 87,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,713.56 : 156,925.42 = 63,415.80 : x
  2. Step 2: Convert to fraction form
    113,713.56/156,925.42 = 63,415.80/x
  3. Step 3: Cross multiply
    113,713.56x = 156,925.42 × 63,415.80
  4. Step 4: Simplify right side
    113,713.56x = 9,951,551,049.64
  5. Step 5: Solve for x
    x = 9,951,551,049.64/113,713.56
  6. Step 6: Final answer
    x = 87,514.20

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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.