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Finding the Fourth Proportional to 79,074.34, 118,479.88 and 55,651.57

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Solution

The fourth proportional to 79,074.34, 118,479.88 and 55,651.57 is: 83,384.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,074.34 : 118,479.88 = 55,651.57 : x
  2. Step 2: Convert to fraction form
    79,074.34/118,479.88 = 55,651.57/x
  3. Step 3: Cross multiply
    79,074.34x = 118,479.88 × 55,651.57
  4. Step 4: Simplify right side
    79,074.34x = 6,593,591,335.41
  5. Step 5: Solve for x
    x = 6,593,591,335.41/79,074.34
  6. Step 6: Final answer
    x = 83,384.72

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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.