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Finding the Fourth Proportional to 18,758.13, 25,882.63 and 10,691.63

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Solution

The fourth proportional to 18,758.13, 25,882.63 and 10,691.63 is: 14,752.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.13 : 25,882.63 = 10,691.63 : x
  2. Step 2: Convert to fraction form
    18,758.13/25,882.63 = 10,691.63/x
  3. Step 3: Cross multiply
    18,758.13x = 25,882.63 × 10,691.63
  4. Step 4: Simplify right side
    18,758.13x = 276,727,320.52
  5. Step 5: Solve for x
    x = 276,727,320.52/18,758.13
  6. Step 6: Final answer
    x = 14,752.40

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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.