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Finding the Fourth Proportional to 167,809.64, 231,581.57 and 91,332.88

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Solution

The fourth proportional to 167,809.64, 231,581.57 and 91,332.88 is: 126,041.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,809.64 : 231,581.57 = 91,332.88 : x
  2. Step 2: Convert to fraction form
    167,809.64/231,581.57 = 91,332.88/x
  3. Step 3: Cross multiply
    167,809.64x = 231,581.57 × 91,332.88
  4. Step 4: Simplify right side
    167,809.64x = 21,151,010,707.40
  5. Step 5: Solve for x
    x = 21,151,010,707.40/167,809.64
  6. Step 6: Final answer
    x = 126,041.69

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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.