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Finding the Fourth Proportional to 172,409.87, 258,531.51 and 60,087.44

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Solution

The fourth proportional to 172,409.87, 258,531.51 and 60,087.44 is: 90,102.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,409.87 : 258,531.51 = 60,087.44 : x
  2. Step 2: Convert to fraction form
    172,409.87/258,531.51 = 60,087.44/x
  3. Step 3: Cross multiply
    172,409.87x = 258,531.51 × 60,087.44
  4. Step 4: Simplify right side
    172,409.87x = 15,534,496,595.23
  5. Step 5: Solve for x
    x = 15,534,496,595.23/172,409.87
  6. Step 6: Final answer
    x = 90,102.13

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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.