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Finding the Fourth Proportional to 10,572.74, 15,859.12 and 4,332.86

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Solution

The fourth proportional to 10,572.74, 15,859.12 and 4,332.86 is: 6,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,572.74 : 15,859.12 = 4,332.86 : x
  2. Step 2: Convert to fraction form
    10,572.74/15,859.12 = 4,332.86/x
  3. Step 3: Cross multiply
    10,572.74x = 15,859.12 × 4,332.86
  4. Step 4: Simplify right side
    10,572.74x = 68,715,346.68
  5. Step 5: Solve for x
    x = 68,715,346.68/10,572.74
  6. Step 6: Final answer
    x = 6,499.29

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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.