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Finding the Fourth Proportional to 167,390.64, 231,000.03 and 90,912.63

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Solution

The fourth proportional to 167,390.64, 231,000.03 and 90,912.63 is: 125,459.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,390.64 : 231,000.03 = 90,912.63 : x
  2. Step 2: Convert to fraction form
    167,390.64/231,000.03 = 90,912.63/x
  3. Step 3: Cross multiply
    167,390.64x = 231,000.03 × 90,912.63
  4. Step 4: Simplify right side
    167,390.64x = 21,000,820,257.38
  5. Step 5: Solve for x
    x = 21,000,820,257.38/167,390.64
  6. Step 6: Final answer
    x = 125,459.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.