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Finding the Fourth Proportional to 132,540.48, 198,935.28 and 69,405.92

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Solution

The fourth proportional to 132,540.48, 198,935.28 and 69,405.92 is: 104,174.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,540.48 : 198,935.28 = 69,405.92 : x
  2. Step 2: Convert to fraction form
    132,540.48/198,935.28 = 69,405.92/x
  3. Step 3: Cross multiply
    132,540.48x = 198,935.28 × 69,405.92
  4. Step 4: Simplify right side
    132,540.48x = 13,807,285,134.18
  5. Step 5: Solve for x
    x = 13,807,285,134.18/132,540.48
  6. Step 6: Final answer
    x = 104,174.10

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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.