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Finding the Fourth Proportional to 57,861.90, 86,922.45 and 55,500.30

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Solution

The fourth proportional to 57,861.90, 86,922.45 and 55,500.30 is: 83,374.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,861.90 : 86,922.45 = 55,500.30 : x
  2. Step 2: Convert to fraction form
    57,861.90/86,922.45 = 55,500.30/x
  3. Step 3: Cross multiply
    57,861.90x = 86,922.45 × 55,500.30
  4. Step 4: Simplify right side
    57,861.90x = 4,824,222,051.74
  5. Step 5: Solve for x
    x = 4,824,222,051.74/57,861.90
  6. Step 6: Final answer
    x = 83,374.76

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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.