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Finding the Fourth Proportional to 172,569.87, 258,930.20 and 60,330.67

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Solution

The fourth proportional to 172,569.87, 258,930.20 and 60,330.67 is: 90,522.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,569.87 : 258,930.20 = 60,330.67 : x
  2. Step 2: Convert to fraction form
    172,569.87/258,930.20 = 60,330.67/x
  3. Step 3: Cross multiply
    172,569.87x = 258,930.20 × 60,330.67
  4. Step 4: Simplify right side
    172,569.87x = 15,621,431,952.74
  5. Step 5: Solve for x
    x = 15,621,431,952.74/172,569.87
  6. Step 6: Final answer
    x = 90,522.36

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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.