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Finding the Fourth Proportional to 283,358.60, 391,037.40 and 156,034.68

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Solution

The fourth proportional to 283,358.60, 391,037.40 and 156,034.68 is: 215,329.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,358.60 : 391,037.40 = 156,034.68 : x
  2. Step 2: Convert to fraction form
    283,358.60/391,037.40 = 156,034.68/x
  3. Step 3: Cross multiply
    283,358.60x = 391,037.40 × 156,034.68
  4. Step 4: Simplify right side
    283,358.60x = 61,015,395,577.03
  5. Step 5: Solve for x
    x = 61,015,395,577.03/283,358.60
  6. Step 6: Final answer
    x = 215,329.25

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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.