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Finding the Fourth Proportional to 57,818.20, 86,729.70 and 18,374.20

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Solution

The fourth proportional to 57,818.20, 86,729.70 and 18,374.20 is: 27,562.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,818.20 : 86,729.70 = 18,374.20 : x
  2. Step 2: Convert to fraction form
    57,818.20/86,729.70 = 18,374.20/x
  3. Step 3: Cross multiply
    57,818.20x = 86,729.70 × 18,374.20
  4. Step 4: Simplify right side
    57,818.20x = 1,593,588,853.74
  5. Step 5: Solve for x
    x = 1,593,588,853.74/57,818.20
  6. Step 6: Final answer
    x = 27,562.06

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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.