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Finding the Fourth Proportional to 109,187.52, 150,687.48 and 61,437.84

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Solution

The fourth proportional to 109,187.52, 150,687.48 and 61,437.84 is: 84,789.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,187.52 : 150,687.48 = 61,437.84 : x
  2. Step 2: Convert to fraction form
    109,187.52/150,687.48 = 61,437.84/x
  3. Step 3: Cross multiply
    109,187.52x = 150,687.48 × 61,437.84
  4. Step 4: Simplify right side
    109,187.52x = 9,257,913,286.24
  5. Step 5: Solve for x
    x = 9,257,913,286.24/109,187.52
  6. Step 6: Final answer
    x = 84,789.12

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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.