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Finding the Fourth Proportional to 15,909.10, 23,863.65 and 8,133.10

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Solution

The fourth proportional to 15,909.10, 23,863.65 and 8,133.10 is: 12,199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.10 : 23,863.65 = 8,133.10 : x
  2. Step 2: Convert to fraction form
    15,909.10/23,863.65 = 8,133.10/x
  3. Step 3: Cross multiply
    15,909.10x = 23,863.65 × 8,133.10
  4. Step 4: Simplify right side
    15,909.10x = 194,085,451.82
  5. Step 5: Solve for x
    x = 194,085,451.82/15,909.10
  6. Step 6: Final answer
    x = 12,199.65

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Double scale
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Similar ratio
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1.5x scale

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.