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Finding the Fourth Proportional to 57,843.32, 86,764.97 and 18,400.47

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Solution

The fourth proportional to 57,843.32, 86,764.97 and 18,400.47 is: 27,600.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,843.32 : 86,764.97 = 18,400.47 : x
  2. Step 2: Convert to fraction form
    57,843.32/86,764.97 = 18,400.47/x
  3. Step 3: Cross multiply
    57,843.32x = 86,764.97 × 18,400.47
  4. Step 4: Simplify right side
    57,843.32x = 1,596,515,948.17
  5. Step 5: Solve for x
    x = 1,596,515,948.17/57,843.32
  6. Step 6: Final answer
    x = 27,600.70

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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.