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Finding the Fourth Proportional to 92,712.41, 127,714.10 and 79,055.97

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Solution

The fourth proportional to 92,712.41, 127,714.10 and 79,055.97 is: 108,901.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,712.41 : 127,714.10 = 79,055.97 : x
  2. Step 2: Convert to fraction form
    92,712.41/127,714.10 = 79,055.97/x
  3. Step 3: Cross multiply
    92,712.41x = 127,714.10 × 79,055.97
  4. Step 4: Simplify right side
    92,712.41x = 10,096,561,662.90
  5. Step 5: Solve for x
    x = 10,096,561,662.90/92,712.41
  6. Step 6: Final answer
    x = 108,901.95

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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.