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Finding the Fourth Proportional to 92,144.87, 127,199.15 and 61,947.71

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Solution

The fourth proportional to 92,144.87, 127,199.15 and 61,947.71 is: 85,514.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,144.87 : 127,199.15 = 61,947.71 : x
  2. Step 2: Convert to fraction form
    92,144.87/127,199.15 = 61,947.71/x
  3. Step 3: Cross multiply
    92,144.87x = 127,199.15 × 61,947.71
  4. Step 4: Simplify right side
    92,144.87x = 7,879,695,820.01
  5. Step 5: Solve for x
    x = 7,879,695,820.01/92,144.87
  6. Step 6: Final answer
    x = 85,514.21

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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.