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Finding the Fourth Proportional to 172,718.60, 259,153.14 and 60,479.44

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Solution

The fourth proportional to 172,718.60, 259,153.14 and 60,479.44 is: 90,745.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,718.60 : 259,153.14 = 60,479.44 : x
  2. Step 2: Convert to fraction form
    172,718.60/259,153.14 = 60,479.44/x
  3. Step 3: Cross multiply
    172,718.60x = 259,153.14 × 60,479.44
  4. Step 4: Simplify right side
    172,718.60x = 15,673,436,781.44
  5. Step 5: Solve for x
    x = 15,673,436,781.44/172,718.60
  6. Step 6: Final answer
    x = 90,745.51

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1.5x scale

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.