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Finding the Fourth Proportional to 92,114.20, 138,317.10 and 69,952.60

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Solution

The fourth proportional to 92,114.20, 138,317.10 and 69,952.60 is: 105,039.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,114.20 : 138,317.10 = 69,952.60 : x
  2. Step 2: Convert to fraction form
    92,114.20/138,317.10 = 69,952.60/x
  3. Step 3: Cross multiply
    92,114.20x = 138,317.10 × 69,952.60
  4. Step 4: Simplify right side
    92,114.20x = 9,675,640,769.46
  5. Step 5: Solve for x
    x = 9,675,640,769.46/92,114.20
  6. Step 6: Final answer
    x = 105,039.62

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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.