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Finding the Fourth Proportional to 118,338.49, 177,509.31 and 39,452.74

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Solution

The fourth proportional to 118,338.49, 177,509.31 and 39,452.74 is: 59,179.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,338.49 : 177,509.31 = 39,452.74 : x
  2. Step 2: Convert to fraction form
    118,338.49/177,509.31 = 39,452.74/x
  3. Step 3: Cross multiply
    118,338.49x = 177,509.31 × 39,452.74
  4. Step 4: Simplify right side
    118,338.49x = 7,003,229,061.78
  5. Step 5: Solve for x
    x = 7,003,229,061.78/118,338.49
  6. Step 6: Final answer
    x = 59,179.64

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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.