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Finding the Fourth Proportional to 239,391.30, 359,139.48 and 70,924.80

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Solution

The fourth proportional to 239,391.30, 359,139.48 and 70,924.80 is: 106,402.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,391.30 : 359,139.48 = 70,924.80 : x
  2. Step 2: Convert to fraction form
    239,391.30/359,139.48 = 70,924.80/x
  3. Step 3: Cross multiply
    239,391.30x = 359,139.48 × 70,924.80
  4. Step 4: Simplify right side
    239,391.30x = 25,471,895,791.10
  5. Step 5: Solve for x
    x = 25,471,895,791.10/239,391.30
  6. Step 6: Final answer
    x = 106,402.76

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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.