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Finding the Fourth Proportional to 92,042.98, 138,066.18 and 28,861.71

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Solution

The fourth proportional to 92,042.98, 138,066.18 and 28,861.71 is: 43,293.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,042.98 : 138,066.18 = 28,861.71 : x
  2. Step 2: Convert to fraction form
    92,042.98/138,066.18 = 28,861.71/x
  3. Step 3: Cross multiply
    92,042.98x = 138,066.18 × 28,861.71
  4. Step 4: Simplify right side
    92,042.98x = 3,984,826,047.97
  5. Step 5: Solve for x
    x = 3,984,826,047.97/92,042.98
  6. Step 6: Final answer
    x = 43,293.10

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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.