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Finding the Fourth Proportional to 62,492.42, 86,279.78 and 55,766.48

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Solution

The fourth proportional to 62,492.42, 86,279.78 and 55,766.48 is: 76,993.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,492.42 : 86,279.78 = 55,766.48 : x
  2. Step 2: Convert to fraction form
    62,492.42/86,279.78 = 55,766.48/x
  3. Step 3: Cross multiply
    62,492.42x = 86,279.78 × 55,766.48
  4. Step 4: Simplify right side
    62,492.42x = 4,811,519,625.77
  5. Step 5: Solve for x
    x = 4,811,519,625.77/62,492.42
  6. Step 6: Final answer
    x = 76,993.65

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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.