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Finding the Fourth Proportional to 57,670.20, 86,490.90 and 22,123.80

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Solution

The fourth proportional to 57,670.20, 86,490.90 and 22,123.80 is: 33,180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,670.20 : 86,490.90 = 22,123.80 : x
  2. Step 2: Convert to fraction form
    57,670.20/86,490.90 = 22,123.80/x
  3. Step 3: Cross multiply
    57,670.20x = 86,490.90 × 22,123.80
  4. Step 4: Simplify right side
    57,670.20x = 1,913,507,373.42
  5. Step 5: Solve for x
    x = 1,913,507,373.42/57,670.20
  6. Step 6: Final answer
    x = 33,180.18

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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.