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Finding the Fourth Proportional to 63,861.20, 95,791.80 and 56,085.20

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Solution

The fourth proportional to 63,861.20, 95,791.80 and 56,085.20 is: 84,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,861.20 : 95,791.80 = 56,085.20 : x
  2. Step 2: Convert to fraction form
    63,861.20/95,791.80 = 56,085.20/x
  3. Step 3: Cross multiply
    63,861.20x = 95,791.80 × 56,085.20
  4. Step 4: Simplify right side
    63,861.20x = 5,372,502,261.36
  5. Step 5: Solve for x
    x = 5,372,502,261.36/63,861.20
  6. Step 6: Final answer
    x = 84,127.80

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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.