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Finding the Fourth Proportional to 136,642.59, 204,981.17 and 53,525.79

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Solution

The fourth proportional to 136,642.59, 204,981.17 and 53,525.79 is: 80,295.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,642.59 : 204,981.17 = 53,525.79 : x
  2. Step 2: Convert to fraction form
    136,642.59/204,981.17 = 53,525.79/x
  3. Step 3: Cross multiply
    136,642.59x = 204,981.17 × 53,525.79
  4. Step 4: Simplify right side
    136,642.59x = 10,971,778,791.75
  5. Step 5: Solve for x
    x = 10,971,778,791.75/136,642.59
  6. Step 6: Final answer
    x = 80,295.45

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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.