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Finding the Fourth Proportional to 159,312.33, 219,825.29 and 91,316.79

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Solution

The fourth proportional to 159,312.33, 219,825.29 and 91,316.79 is: 126,002.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,312.33 : 219,825.29 = 91,316.79 : x
  2. Step 2: Convert to fraction form
    159,312.33/219,825.29 = 91,316.79/x
  3. Step 3: Cross multiply
    159,312.33x = 219,825.29 × 91,316.79
  4. Step 4: Simplify right side
    159,312.33x = 20,073,739,843.62
  5. Step 5: Solve for x
    x = 20,073,739,843.62/159,312.33
  6. Step 6: Final answer
    x = 126,002.42

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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.