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Finding the Fourth Proportional to 186,958.80, 280,438.20 and 53,843.40

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Solution

The fourth proportional to 186,958.80, 280,438.20 and 53,843.40 is: 80,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,958.80 : 280,438.20 = 53,843.40 : x
  2. Step 2: Convert to fraction form
    186,958.80/280,438.20 = 53,843.40/x
  3. Step 3: Cross multiply
    186,958.80x = 280,438.20 × 53,843.40
  4. Step 4: Simplify right side
    186,958.80x = 15,099,746,177.88
  5. Step 5: Solve for x
    x = 15,099,746,177.88/186,958.80
  6. Step 6: Final answer
    x = 80,765.10

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1.5x scale

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.