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Finding the Fourth Proportional to 412,157.06, 618,324.33 and 127,841.90

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Solution

The fourth proportional to 412,157.06, 618,324.33 and 127,841.90 is: 191,790.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,157.06 : 618,324.33 = 127,841.90 : x
  2. Step 2: Convert to fraction form
    412,157.06/618,324.33 = 127,841.90/x
  3. Step 3: Cross multiply
    412,157.06x = 618,324.33 × 127,841.90
  4. Step 4: Simplify right side
    412,157.06x = 79,047,754,551.21
  5. Step 5: Solve for x
    x = 79,047,754,551.21/412,157.06
  6. Step 6: Final answer
    x = 191,790.37

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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.