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Finding the Fourth Proportional to 167,720.70, 231,458.79 and 91,244.10

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Solution

The fourth proportional to 167,720.70, 231,458.79 and 91,244.10 is: 125,919.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,720.70 : 231,458.79 = 91,244.10 : x
  2. Step 2: Convert to fraction form
    167,720.70/231,458.79 = 91,244.10/x
  3. Step 3: Cross multiply
    167,720.70x = 231,458.79 × 91,244.10
  4. Step 4: Simplify right side
    167,720.70x = 21,119,248,980.64
  5. Step 5: Solve for x
    x = 21,119,248,980.64/167,720.70
  6. Step 6: Final answer
    x = 125,919.16

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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.