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Finding the Fourth Proportional to 305,632.80, 458,449.20 and 193,658.40

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Solution

The fourth proportional to 305,632.80, 458,449.20 and 193,658.40 is: 290,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,632.80 : 458,449.20 = 193,658.40 : x
  2. Step 2: Convert to fraction form
    305,632.80/458,449.20 = 193,658.40/x
  3. Step 3: Cross multiply
    305,632.80x = 458,449.20 × 193,658.40
  4. Step 4: Simplify right side
    305,632.80x = 88,782,538,553.28
  5. Step 5: Solve for x
    x = 88,782,538,553.28/305,632.80
  6. Step 6: Final answer
    x = 290,487.60

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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.