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Finding the Fourth Proportional to 412,106.59, 618,248.30 and 127,791.03

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Solution

The fourth proportional to 412,106.59, 618,248.30 and 127,791.03 is: 191,713.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,106.59 : 618,248.30 = 127,791.03 : x
  2. Step 2: Convert to fraction form
    412,106.59/618,248.30 = 127,791.03/x
  3. Step 3: Cross multiply
    412,106.59x = 618,248.30 × 127,791.03
  4. Step 4: Simplify right side
    412,106.59x = 79,006,587,052.75
  5. Step 5: Solve for x
    x = 79,006,587,052.75/412,106.59
  6. Step 6: Final answer
    x = 191,713.96

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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.