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Finding the Fourth Proportional to 92,930.61, 139,340.57 and 36,778.71

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Solution

The fourth proportional to 92,930.61, 139,340.57 and 36,778.71 is: 55,146.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,930.61 : 139,340.57 = 36,778.71 : x
  2. Step 2: Convert to fraction form
    92,930.61/139,340.57 = 36,778.71/x
  3. Step 3: Cross multiply
    92,930.61x = 139,340.57 × 36,778.71
  4. Step 4: Simplify right side
    92,930.61x = 5,124,766,231.37
  5. Step 5: Solve for x
    x = 5,124,766,231.37/92,930.61
  6. Step 6: Final answer
    x = 55,146.16

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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.