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Finding the Fourth Proportional to 92,126.87, 127,152.48 and 57,687.59

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Solution

The fourth proportional to 92,126.87, 127,152.48 and 57,687.59 is: 79,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,126.87 : 127,152.48 = 57,687.59 : x
  2. Step 2: Convert to fraction form
    92,126.87/127,152.48 = 57,687.59/x
  3. Step 3: Cross multiply
    92,126.87x = 127,152.48 × 57,687.59
  4. Step 4: Simplify right side
    92,126.87x = 7,335,120,667.93
  5. Step 5: Solve for x
    x = 7,335,120,667.93/92,126.87
  6. Step 6: Final answer
    x = 79,619.78

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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.