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Finding the Fourth Proportional to 283,920.57, 391,805.10 and 154,860.03

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Solution

The fourth proportional to 283,920.57, 391,805.10 and 154,860.03 is: 213,703.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,920.57 : 391,805.10 = 154,860.03 : x
  2. Step 2: Convert to fraction form
    283,920.57/391,805.10 = 154,860.03/x
  3. Step 3: Cross multiply
    283,920.57x = 391,805.10 × 154,860.03
  4. Step 4: Simplify right side
    283,920.57x = 60,674,949,540.15
  5. Step 5: Solve for x
    x = 60,674,949,540.15/283,920.57
  6. Step 6: Final answer
    x = 213,703.96

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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.