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Finding the Fourth Proportional to 172,541.33, 258,729.88 and 60,207.90

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Solution

The fourth proportional to 172,541.33, 258,729.88 and 60,207.90 is: 90,283.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,541.33 : 258,729.88 = 60,207.90 : x
  2. Step 2: Convert to fraction form
    172,541.33/258,729.88 = 60,207.90/x
  3. Step 3: Cross multiply
    172,541.33x = 258,729.88 × 60,207.90
  4. Step 4: Simplify right side
    172,541.33x = 15,577,582,742.05
  5. Step 5: Solve for x
    x = 15,577,582,742.05/172,541.33
  6. Step 6: Final answer
    x = 90,283.20

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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.