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Finding the Fourth Proportional to 239,880.74, 359,758.31 and 71,355.69

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Solution

The fourth proportional to 239,880.74, 359,758.31 and 71,355.69 is: 107,014.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,880.74 : 359,758.31 = 71,355.69 : x
  2. Step 2: Convert to fraction form
    239,880.74/359,758.31 = 71,355.69/x
  3. Step 3: Cross multiply
    239,880.74x = 359,758.31 × 71,355.69
  4. Step 4: Simplify right side
    239,880.74x = 25,670,802,086.51
  5. Step 5: Solve for x
    x = 25,670,802,086.51/239,880.74
  6. Step 6: Final answer
    x = 107,014.86

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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.