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Finding the Fourth Proportional to 439,408.12, 606,381.76 and 238,204.12

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Solution

The fourth proportional to 439,408.12, 606,381.76 and 238,204.12 is: 328,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,408.12 : 606,381.76 = 238,204.12 : x
  2. Step 2: Convert to fraction form
    439,408.12/606,381.76 = 238,204.12/x
  3. Step 3: Cross multiply
    439,408.12x = 606,381.76 × 238,204.12
  4. Step 4: Simplify right side
    439,408.12x = 144,442,633,524.85
  5. Step 5: Solve for x
    x = 144,442,633,524.85/439,408.12
  6. Step 6: Final answer
    x = 328,720.90

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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.