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Finding the Fourth Proportional to 239,354.29, 359,040.54 and 89,578.81

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Solution

The fourth proportional to 239,354.29, 359,040.54 and 89,578.81 is: 134,371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,354.29 : 359,040.54 = 89,578.81 : x
  2. Step 2: Convert to fraction form
    239,354.29/359,040.54 = 89,578.81/x
  3. Step 3: Cross multiply
    239,354.29x = 359,040.54 × 89,578.81
  4. Step 4: Simplify right side
    239,354.29x = 32,162,422,519.75
  5. Step 5: Solve for x
    x = 32,162,422,519.75/239,354.29
  6. Step 6: Final answer
    x = 134,371.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.