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Finding the Fourth Proportional to 113,861.69, 157,129.13 and 63,560.69

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Solution

The fourth proportional to 113,861.69, 157,129.13 and 63,560.69 is: 87,713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,861.69 : 157,129.13 = 63,560.69 : x
  2. Step 2: Convert to fraction form
    113,861.69/157,129.13 = 63,560.69/x
  3. Step 3: Cross multiply
    113,861.69x = 157,129.13 × 63,560.69
  4. Step 4: Simplify right side
    113,861.69x = 9,987,235,921.90
  5. Step 5: Solve for x
    x = 9,987,235,921.90/113,861.69
  6. Step 6: Final answer
    x = 87,713.75

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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.