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Finding the Fourth Proportional to 172,407.30, 258,602.67 and 60,082.98

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Solution

The fourth proportional to 172,407.30, 258,602.67 and 60,082.98 is: 90,121.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,407.30 : 258,602.67 = 60,082.98 : x
  2. Step 2: Convert to fraction form
    172,407.30/258,602.67 = 60,082.98/x
  3. Step 3: Cross multiply
    172,407.30x = 258,602.67 × 60,082.98
  4. Step 4: Simplify right side
    172,407.30x = 15,537,619,049.56
  5. Step 5: Solve for x
    x = 15,537,619,049.56/172,407.30
  6. Step 6: Final answer
    x = 90,121.58

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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.