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Finding the Fourth Proportional to 316,469.39, 436,727.90 and 173,230.25

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Solution

The fourth proportional to 316,469.39, 436,727.90 and 173,230.25 is: 239,057.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,469.39 : 436,727.90 = 173,230.25 : x
  2. Step 2: Convert to fraction form
    316,469.39/436,727.90 = 173,230.25/x
  3. Step 3: Cross multiply
    316,469.39x = 436,727.90 × 173,230.25
  4. Step 4: Simplify right side
    316,469.39x = 75,654,482,432.82
  5. Step 5: Solve for x
    x = 75,654,482,432.82/316,469.39
  6. Step 6: Final answer
    x = 239,057.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.