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Finding the Fourth Proportional to 62,588.70, 86,343.42 and 55,425.90

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Solution

The fourth proportional to 62,588.70, 86,343.42 and 55,425.90 is: 76,462.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,588.70 : 86,343.42 = 55,425.90 : x
  2. Step 2: Convert to fraction form
    62,588.70/86,343.42 = 55,425.90/x
  3. Step 3: Cross multiply
    62,588.70x = 86,343.42 × 55,425.90
  4. Step 4: Simplify right side
    62,588.70x = 4,785,661,762.58
  5. Step 5: Solve for x
    x = 4,785,661,762.58/62,588.70
  6. Step 6: Final answer
    x = 76,462.07

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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.