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Finding the Fourth Proportional to 15,167.76, 20,932.56 and 9,199.68

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Solution

The fourth proportional to 15,167.76, 20,932.56 and 9,199.68 is: 12,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,167.76 : 20,932.56 = 9,199.68 : x
  2. Step 2: Convert to fraction form
    15,167.76/20,932.56 = 9,199.68/x
  3. Step 3: Cross multiply
    15,167.76x = 20,932.56 × 9,199.68
  4. Step 4: Simplify right side
    15,167.76x = 192,572,853.58
  5. Step 5: Solve for x
    x = 192,572,853.58/15,167.76
  6. Step 6: Final answer
    x = 12,696.20

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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.