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Finding the Fourth Proportional to 186,638.73, 280,074.20 and 75,830.73

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Solution

The fourth proportional to 186,638.73, 280,074.20 and 75,830.73 is: 113,793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,638.73 : 280,074.20 = 75,830.73 : x
  2. Step 2: Convert to fraction form
    186,638.73/280,074.20 = 75,830.73/x
  3. Step 3: Cross multiply
    186,638.73x = 280,074.20 × 75,830.73
  4. Step 4: Simplify right side
    186,638.73x = 21,238,230,661.01
  5. Step 5: Solve for x
    x = 21,238,230,661.01/186,638.73
  6. Step 6: Final answer
    x = 113,793.27

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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.