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Finding the Fourth Proportional to 172,568.64, 258,971.18 and 60,248.87

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Solution

The fourth proportional to 172,568.64, 258,971.18 and 60,248.87 is: 90,414.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,568.64 : 258,971.18 = 60,248.87 : x
  2. Step 2: Convert to fraction form
    172,568.64/258,971.18 = 60,248.87/x
  3. Step 3: Cross multiply
    172,568.64x = 258,971.18 × 60,248.87
  4. Step 4: Simplify right side
    172,568.64x = 15,602,720,957.57
  5. Step 5: Solve for x
    x = 15,602,720,957.57/172,568.64
  6. Step 6: Final answer
    x = 90,414.58

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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.