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Finding the Fourth Proportional to 172,476.81, 258,758.28 and 60,158.64

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Solution

The fourth proportional to 172,476.81, 258,758.28 and 60,158.64 is: 90,252.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,476.81 : 258,758.28 = 60,158.64 : x
  2. Step 2: Convert to fraction form
    172,476.81/258,758.28 = 60,158.64/x
  3. Step 3: Cross multiply
    172,476.81x = 258,758.28 × 60,158.64
  4. Step 4: Simplify right side
    172,476.81x = 15,566,546,213.54
  5. Step 5: Solve for x
    x = 15,566,546,213.54/172,476.81
  6. Step 6: Final answer
    x = 90,252.98

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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.