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Finding the Fourth Proportional to 283,781.60, 391,621.44 and 156,453.92

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Solution

The fourth proportional to 283,781.60, 391,621.44 and 156,453.92 is: 215,907.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,781.60 : 391,621.44 = 156,453.92 : x
  2. Step 2: Convert to fraction form
    283,781.60/391,621.44 = 156,453.92/x
  3. Step 3: Cross multiply
    283,781.60x = 391,621.44 × 156,453.92
  4. Step 4: Simplify right side
    283,781.60x = 61,270,709,444.04
  5. Step 5: Solve for x
    x = 61,270,709,444.04/283,781.60
  6. Step 6: Final answer
    x = 215,907.97

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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.