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Finding the Fourth Proportional to 124,461.44, 171,769.74 and 76,713.56

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Solution

The fourth proportional to 124,461.44, 171,769.74 and 76,713.56 is: 105,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,461.44 : 171,769.74 = 76,713.56 : x
  2. Step 2: Convert to fraction form
    124,461.44/171,769.74 = 76,713.56/x
  3. Step 3: Cross multiply
    124,461.44x = 171,769.74 × 76,713.56
  4. Step 4: Simplify right side
    124,461.44x = 13,177,068,255.67
  5. Step 5: Solve for x
    x = 13,177,068,255.67/124,461.44
  6. Step 6: Final answer
    x = 105,872.70

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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.