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Finding the Fourth Proportional to 186,793.60, 280,881.60 and 156,380.80

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Solution

The fourth proportional to 186,793.60, 280,881.60 and 156,380.80 is: 235,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,793.60 : 280,881.60 = 156,380.80 : x
  2. Step 2: Convert to fraction form
    186,793.60/280,881.60 = 156,380.80/x
  3. Step 3: Cross multiply
    186,793.60x = 280,881.60 × 156,380.80
  4. Step 4: Simplify right side
    186,793.60x = 43,924,489,313.28
  5. Step 5: Solve for x
    x = 43,924,489,313.28/186,793.60
  6. Step 6: Final answer
    x = 235,149.86

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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.