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Finding the Fourth Proportional to 115,785.61, 173,560.53 and 52,650.56

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Solution

The fourth proportional to 115,785.61, 173,560.53 and 52,650.56 is: 78,922.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,785.61 : 173,560.53 = 52,650.56 : x
  2. Step 2: Convert to fraction form
    115,785.61/173,560.53 = 52,650.56/x
  3. Step 3: Cross multiply
    115,785.61x = 173,560.53 × 52,650.56
  4. Step 4: Simplify right side
    115,785.61x = 9,138,059,098.40
  5. Step 5: Solve for x
    x = 9,138,059,098.40/115,785.61
  6. Step 6: Final answer
    x = 78,922.23

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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.