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Finding the Fourth Proportional to 88,489.81, 132,730.85 and 28,516.95

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Solution

The fourth proportional to 88,489.81, 132,730.85 and 28,516.95 is: 42,774.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,489.81 : 132,730.85 = 28,516.95 : x
  2. Step 2: Convert to fraction form
    88,489.81/132,730.85 = 28,516.95/x
  3. Step 3: Cross multiply
    88,489.81x = 132,730.85 × 28,516.95
  4. Step 4: Simplify right side
    88,489.81x = 3,785,079,012.91
  5. Step 5: Solve for x
    x = 3,785,079,012.91/88,489.81
  6. Step 6: Final answer
    x = 42,774.18

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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.