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Finding the Fourth Proportional to 62,488.92, 86,274.95 and 55,762.98

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Solution

The fourth proportional to 62,488.92, 86,274.95 and 55,762.98 is: 76,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,488.92 : 86,274.95 = 55,762.98 : x
  2. Step 2: Convert to fraction form
    62,488.92/86,274.95 = 55,762.98/x
  3. Step 3: Cross multiply
    62,488.92x = 86,274.95 × 55,762.98
  4. Step 4: Simplify right side
    62,488.92x = 4,810,948,351.14
  5. Step 5: Solve for x
    x = 4,810,948,351.14/62,488.92
  6. Step 6: Final answer
    x = 76,988.82

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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.