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Finding the Fourth Proportional to 186,638.44, 280,074.30 and 75,830.44

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Solution

The fourth proportional to 186,638.44, 280,074.30 and 75,830.44 is: 113,793.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,638.44 : 280,074.30 = 75,830.44 : x
  2. Step 2: Convert to fraction form
    186,638.44/280,074.30 = 75,830.44/x
  3. Step 3: Cross multiply
    186,638.44x = 280,074.30 × 75,830.44
  4. Step 4: Simplify right side
    186,638.44x = 21,238,157,401.69
  5. Step 5: Solve for x
    x = 21,238,157,401.69/186,638.44
  6. Step 6: Final answer
    x = 113,793.05

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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.