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Finding the Fourth Proportional to 283,441.92, 391,149.84 and 156,117.51

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Solution

The fourth proportional to 283,441.92, 391,149.84 and 156,117.51 is: 215,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,441.92 : 391,149.84 = 156,117.51 : x
  2. Step 2: Convert to fraction form
    283,441.92/391,149.84 = 156,117.51/x
  3. Step 3: Cross multiply
    283,441.92x = 391,149.84 × 156,117.51
  4. Step 4: Simplify right side
    283,441.92x = 61,065,339,057.70
  5. Step 5: Solve for x
    x = 61,065,339,057.70/283,441.92
  6. Step 6: Final answer
    x = 215,442.16

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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.