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Finding the Fourth Proportional to 92,938.95, 139,310.96 and 45,488.61

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Solution

The fourth proportional to 92,938.95, 139,310.96 and 45,488.61 is: 68,185.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,938.95 : 139,310.96 = 45,488.61 : x
  2. Step 2: Convert to fraction form
    92,938.95/139,310.96 = 45,488.61/x
  3. Step 3: Cross multiply
    92,938.95x = 139,310.96 × 45,488.61
  4. Step 4: Simplify right side
    92,938.95x = 6,337,061,700.72
  5. Step 5: Solve for x
    x = 6,337,061,700.72/92,938.95
  6. Step 6: Final answer
    x = 68,185.21

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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.