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Finding the Fourth Proportional to 167,449.91, 231,079.96 and 90,968.40

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Solution

The fourth proportional to 167,449.91, 231,079.96 and 90,968.40 is: 125,535.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,449.91 : 231,079.96 = 90,968.40 : x
  2. Step 2: Convert to fraction form
    167,449.91/231,079.96 = 90,968.40/x
  3. Step 3: Cross multiply
    167,449.91x = 231,079.96 × 90,968.40
  4. Step 4: Simplify right side
    167,449.91x = 21,020,974,233.26
  5. Step 5: Solve for x
    x = 21,020,974,233.26/167,449.91
  6. Step 6: Final answer
    x = 125,535.89

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1.5x scale

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.