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Finding the Fourth Proportional to 171,728.88, 236,851.92 and 103,674.72

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Solution

The fourth proportional to 171,728.88, 236,851.92 and 103,674.72 is: 142,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,728.88 : 236,851.92 = 103,674.72 : x
  2. Step 2: Convert to fraction form
    171,728.88/236,851.92 = 103,674.72/x
  3. Step 3: Cross multiply
    171,728.88x = 236,851.92 × 103,674.72
  4. Step 4: Simplify right side
    171,728.88x = 24,555,556,487.46
  5. Step 5: Solve for x
    x = 24,555,556,487.46/171,728.88
  6. Step 6: Final answer
    x = 142,990.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.