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Finding the Fourth Proportional to 132,689.28, 183,113.28 and 73,073.28

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Solution

The fourth proportional to 132,689.28, 183,113.28 and 73,073.28 is: 100,842.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,689.28 : 183,113.28 = 73,073.28 : x
  2. Step 2: Convert to fraction form
    132,689.28/183,113.28 = 73,073.28/x
  3. Step 3: Cross multiply
    132,689.28x = 183,113.28 × 73,073.28
  4. Step 4: Simplify right side
    132,689.28x = 13,380,687,981.16
  5. Step 5: Solve for x
    x = 13,380,687,981.16/132,689.28
  6. Step 6: Final answer
    x = 100,842.27

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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.