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Finding the Fourth Proportional to 159,170.63, 219,686.67 and 91,233.16

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Solution

The fourth proportional to 159,170.63, 219,686.67 and 91,233.16 is: 125,919.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,170.63 : 219,686.67 = 91,233.16 : x
  2. Step 2: Convert to fraction form
    159,170.63/219,686.67 = 91,233.16/x
  3. Step 3: Cross multiply
    159,170.63x = 219,686.67 × 91,233.16
  4. Step 4: Simplify right side
    159,170.63x = 20,042,708,564.76
  5. Step 5: Solve for x
    x = 20,042,708,564.76/159,170.63
  6. Step 6: Final answer
    x = 125,919.64

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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.