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Finding the Fourth Proportional to 61,332.46, 91,989.44 and 39,299.80

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Solution

The fourth proportional to 61,332.46, 91,989.44 and 39,299.80 is: 58,943.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,332.46 : 91,989.44 = 39,299.80 : x
  2. Step 2: Convert to fraction form
    61,332.46/91,989.44 = 39,299.80/x
  3. Step 3: Cross multiply
    61,332.46x = 91,989.44 × 39,299.80
  4. Step 4: Simplify right side
    61,332.46x = 3,615,166,708.56
  5. Step 5: Solve for x
    x = 3,615,166,708.56/61,332.46
  6. Step 6: Final answer
    x = 58,943.78

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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.