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Finding the Fourth Proportional to 280,765.56, 386,799.66 and 195,730.68

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Solution

The fourth proportional to 280,765.56, 386,799.66 and 195,730.68 is: 269,650.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,765.56 : 386,799.66 = 195,730.68 : x
  2. Step 2: Convert to fraction form
    280,765.56/386,799.66 = 195,730.68/x
  3. Step 3: Cross multiply
    280,765.56x = 386,799.66 × 195,730.68
  4. Step 4: Simplify right side
    280,765.56x = 75,708,560,475.57
  5. Step 5: Solve for x
    x = 75,708,560,475.57/280,765.56
  6. Step 6: Final answer
    x = 269,650.45

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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.