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Finding the Fourth Proportional to 394,658.40, 591,987.60 and 173,042.40

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Solution

The fourth proportional to 394,658.40, 591,987.60 and 173,042.40 is: 259,563.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,658.40 : 591,987.60 = 173,042.40 : x
  2. Step 2: Convert to fraction form
    394,658.40/591,987.60 = 173,042.40/x
  3. Step 3: Cross multiply
    394,658.40x = 591,987.60 × 173,042.40
  4. Step 4: Simplify right side
    394,658.40x = 102,438,955,074.24
  5. Step 5: Solve for x
    x = 102,438,955,074.24/394,658.40
  6. Step 6: Final answer
    x = 259,563.60

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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.