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Finding the Fourth Proportional to 13,957.52, 20,934.10 and 9,061.88

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Solution

The fourth proportional to 13,957.52, 20,934.10 and 9,061.88 is: 13,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,957.52 : 20,934.10 = 9,061.88 : x
  2. Step 2: Convert to fraction form
    13,957.52/20,934.10 = 9,061.88/x
  3. Step 3: Cross multiply
    13,957.52x = 20,934.10 × 9,061.88
  4. Step 4: Simplify right side
    13,957.52x = 189,702,302.11
  5. Step 5: Solve for x
    x = 189,702,302.11/13,957.52
  6. Step 6: Final answer
    x = 13,591.40

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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.