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Finding the Fourth Proportional to 280,600.76, 387,356.49 and 178,765.85

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Solution

The fourth proportional to 280,600.76, 387,356.49 and 178,765.85 is: 246,778.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,600.76 : 387,356.49 = 178,765.85 : x
  2. Step 2: Convert to fraction form
    280,600.76/387,356.49 = 178,765.85/x
  3. Step 3: Cross multiply
    280,600.76x = 387,356.49 × 178,765.85
  4. Step 4: Simplify right side
    280,600.76x = 69,246,110,251.08
  5. Step 5: Solve for x
    x = 69,246,110,251.08/280,600.76
  6. Step 6: Final answer
    x = 246,778.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.