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Finding the Fourth Proportional to 108,079.18, 161,987.51 and 76,498.49

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Solution

The fourth proportional to 108,079.18, 161,987.51 and 76,498.49 is: 114,654.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,079.18 : 161,987.51 = 76,498.49 : x
  2. Step 2: Convert to fraction form
    108,079.18/161,987.51 = 76,498.49/x
  3. Step 3: Cross multiply
    108,079.18x = 161,987.51 × 76,498.49
  4. Step 4: Simplify right side
    108,079.18x = 12,391,800,510.07
  5. Step 5: Solve for x
    x = 12,391,800,510.07/108,079.18
  6. Step 6: Final answer
    x = 114,654.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.