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Finding the Fourth Proportional to 125,229.70, 187,844.52 and 65,245.72

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Solution

The fourth proportional to 125,229.70, 187,844.52 and 65,245.72 is: 97,868.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,229.70 : 187,844.52 = 65,245.72 : x
  2. Step 2: Convert to fraction form
    125,229.70/187,844.52 = 65,245.72/x
  3. Step 3: Cross multiply
    125,229.70x = 187,844.52 × 65,245.72
  4. Step 4: Simplify right side
    125,229.70x = 12,256,050,955.45
  5. Step 5: Solve for x
    x = 12,256,050,955.45/125,229.70
  6. Step 6: Final answer
    x = 97,868.56

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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.