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Finding the Fourth Proportional to 169,791.20, 254,686.80 and 155,016.80

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Solution

The fourth proportional to 169,791.20, 254,686.80 and 155,016.80 is: 232,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,791.20 : 254,686.80 = 155,016.80 : x
  2. Step 2: Convert to fraction form
    169,791.20/254,686.80 = 155,016.80/x
  3. Step 3: Cross multiply
    169,791.20x = 254,686.80 × 155,016.80
  4. Step 4: Simplify right side
    169,791.20x = 39,480,732,738.24
  5. Step 5: Solve for x
    x = 39,480,732,738.24/169,791.20
  6. Step 6: Final answer
    x = 232,525.20

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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.