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Finding the Fourth Proportional to 235,453.60, 353,337.45 and 85,693.85

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Solution

The fourth proportional to 235,453.60, 353,337.45 and 85,693.85 is: 128,597.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,453.60 : 353,337.45 = 85,693.85 : x
  2. Step 2: Convert to fraction form
    235,453.60/353,337.45 = 85,693.85/x
  3. Step 3: Cross multiply
    235,453.60x = 353,337.45 × 85,693.85
  4. Step 4: Simplify right side
    235,453.60x = 30,278,846,439.68
  5. Step 5: Solve for x
    x = 30,278,846,439.68/235,453.60
  6. Step 6: Final answer
    x = 128,597.93

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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.