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Finding the Fourth Proportional to 167,165.70, 230,687.76 and 90,686.31

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Solution

The fourth proportional to 167,165.70, 230,687.76 and 90,686.31 is: 125,146.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,165.70 : 230,687.76 = 90,686.31 : x
  2. Step 2: Convert to fraction form
    167,165.70/230,687.76 = 90,686.31/x
  3. Step 3: Cross multiply
    167,165.70x = 230,687.76 × 90,686.31
  4. Step 4: Simplify right side
    167,165.70x = 20,920,220,563.13
  5. Step 5: Solve for x
    x = 20,920,220,563.13/167,165.70
  6. Step 6: Final answer
    x = 125,146.61

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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.