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Finding the Fourth Proportional to 267,639.56, 401,542.61 and 87,726.56

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Solution

The fourth proportional to 267,639.56, 401,542.61 and 87,726.56 is: 131,617.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,639.56 : 401,542.61 = 87,726.56 : x
  2. Step 2: Convert to fraction form
    267,639.56/401,542.61 = 87,726.56/x
  3. Step 3: Cross multiply
    267,639.56x = 401,542.61 × 87,726.56
  4. Step 4: Simplify right side
    267,639.56x = 35,225,952,433.95
  5. Step 5: Solve for x
    x = 35,225,952,433.95/267,639.56
  6. Step 6: Final answer
    x = 131,617.14

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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.