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Finding the Fourth Proportional to 118,479.87, 177,728.97 and 39,594.36

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Solution

The fourth proportional to 118,479.87, 177,728.97 and 39,594.36 is: 59,394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,479.87 : 177,728.97 = 39,594.36 : x
  2. Step 2: Convert to fraction form
    118,479.87/177,728.97 = 39,594.36/x
  3. Step 3: Cross multiply
    118,479.87x = 177,728.97 × 39,594.36
  4. Step 4: Simplify right side
    118,479.87x = 7,037,064,820.61
  5. Step 5: Solve for x
    x = 7,037,064,820.61/118,479.87
  6. Step 6: Final answer
    x = 59,394.60

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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.