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Finding the Fourth Proportional to 172,756.80, 259,118.19 and 60,416.28

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Solution

The fourth proportional to 172,756.80, 259,118.19 and 60,416.28 is: 90,618.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,756.80 : 259,118.19 = 60,416.28 : x
  2. Step 2: Convert to fraction form
    172,756.80/259,118.19 = 60,416.28/x
  3. Step 3: Cross multiply
    172,756.80x = 259,118.19 × 60,416.28
  4. Step 4: Simplify right side
    172,756.80x = 15,654,957,120.13
  5. Step 5: Solve for x
    x = 15,654,957,120.13/172,756.80
  6. Step 6: Final answer
    x = 90,618.47

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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.