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Finding the Fourth Proportional to 391,626.96, 587,441 and 96,138.96

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Solution

The fourth proportional to 391,626.96, 587,441 and 96,138.96 is: 144,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,626.96 : 587,441 = 96,138.96 : x
  2. Step 2: Convert to fraction form
    391,626.96/587,441 = 96,138.96/x
  3. Step 3: Cross multiply
    391,626.96x = 587,441 × 96,138.96
  4. Step 4: Simplify right side
    391,626.96x = 56,475,966,801.36
  5. Step 5: Solve for x
    x = 56,475,966,801.36/391,626.96
  6. Step 6: Final answer
    x = 144,208.58

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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.