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Finding the Fourth Proportional to 92,169.79, 127,126.40 and 69,509.73

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Solution

The fourth proportional to 92,169.79, 127,126.40 and 69,509.73 is: 95,872.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,169.79 : 127,126.40 = 69,509.73 : x
  2. Step 2: Convert to fraction form
    92,169.79/127,126.40 = 69,509.73/x
  3. Step 3: Cross multiply
    92,169.79x = 127,126.40 × 69,509.73
  4. Step 4: Simplify right side
    92,169.79x = 8,836,521,869.05
  5. Step 5: Solve for x
    x = 8,836,521,869.05/92,169.79
  6. Step 6: Final answer
    x = 95,872.22

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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.