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Finding the Fourth Proportional to 18,291.52, 25,251.72 and 11,584.16

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Solution

The fourth proportional to 18,291.52, 25,251.72 and 11,584.16 is: 15,992.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.52 : 25,251.72 = 11,584.16 : x
  2. Step 2: Convert to fraction form
    18,291.52/25,251.72 = 11,584.16/x
  3. Step 3: Cross multiply
    18,291.52x = 25,251.72 × 11,584.16
  4. Step 4: Simplify right side
    18,291.52x = 292,519,964.76
  5. Step 5: Solve for x
    x = 292,519,964.76/18,291.52
  6. Step 6: Final answer
    x = 15,992.11

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1.5x scale

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.