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Finding the Fourth Proportional to 100,676.18, 151,130.93 and 54,020.18

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Solution

The fourth proportional to 100,676.18, 151,130.93 and 54,020.18 is: 81,092.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,676.18 : 151,130.93 = 54,020.18 : x
  2. Step 2: Convert to fraction form
    100,676.18/151,130.93 = 54,020.18/x
  3. Step 3: Cross multiply
    100,676.18x = 151,130.93 × 54,020.18
  4. Step 4: Simplify right side
    100,676.18x = 8,164,120,042.17
  5. Step 5: Solve for x
    x = 8,164,120,042.17/100,676.18
  6. Step 6: Final answer
    x = 81,092.87

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Why These Related Problems?

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