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Finding the Fourth Proportional to 167,978.20, 231,810.24 and 91,497.06

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Solution

The fourth proportional to 167,978.20, 231,810.24 and 91,497.06 is: 126,266.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,978.20 : 231,810.24 = 91,497.06 : x
  2. Step 2: Convert to fraction form
    167,978.20/231,810.24 = 91,497.06/x
  3. Step 3: Cross multiply
    167,978.20x = 231,810.24 × 91,497.06
  4. Step 4: Simplify right side
    167,978.20x = 21,209,955,437.89
  5. Step 5: Solve for x
    x = 21,209,955,437.89/167,978.20
  6. Step 6: Final answer
    x = 126,266.12

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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.