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Finding the Fourth Proportional to 18,107.90, 24,995.04 and 11,404.76

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Solution

The fourth proportional to 18,107.90, 24,995.04 and 11,404.76 is: 15,742.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,107.90 : 24,995.04 = 11,404.76 : x
  2. Step 2: Convert to fraction form
    18,107.90/24,995.04 = 11,404.76/x
  3. Step 3: Cross multiply
    18,107.90x = 24,995.04 × 11,404.76
  4. Step 4: Simplify right side
    18,107.90x = 285,062,432.39
  5. Step 5: Solve for x
    x = 285,062,432.39/18,107.90
  6. Step 6: Final answer
    x = 15,742.43

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Half scale
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Double scale
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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.