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Finding the Fourth Proportional to 71,657.99, 98,890.07 and 41,440.43

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Solution

The fourth proportional to 71,657.99, 98,890.07 and 41,440.43 is: 57,188.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,657.99 : 98,890.07 = 41,440.43 : x
  2. Step 2: Convert to fraction form
    71,657.99/98,890.07 = 41,440.43/x
  3. Step 3: Cross multiply
    71,657.99x = 98,890.07 × 41,440.43
  4. Step 4: Simplify right side
    71,657.99x = 4,098,047,023.53
  5. Step 5: Solve for x
    x = 4,098,047,023.53/71,657.99
  6. Step 6: Final answer
    x = 57,188.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.