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Finding the Fourth Proportional to 342,479.70, 513,591.78 and 117,776.52

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Solution

The fourth proportional to 342,479.70, 513,591.78 and 117,776.52 is: 176,620.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,479.70 : 513,591.78 = 117,776.52 : x
  2. Step 2: Convert to fraction form
    342,479.70/513,591.78 = 117,776.52/x
  3. Step 3: Cross multiply
    342,479.70x = 513,591.78 × 117,776.52
  4. Step 4: Simplify right side
    342,479.70x = 60,489,052,549.01
  5. Step 5: Solve for x
    x = 60,489,052,549.01/342,479.70
  6. Step 6: Final answer
    x = 176,620.84

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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.