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Finding the Fourth Proportional to 283,383.60, 391,071.92 and 156,059.68

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Solution

The fourth proportional to 283,383.60, 391,071.92 and 156,059.68 is: 215,363.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,383.60 : 391,071.92 = 156,059.68 : x
  2. Step 2: Convert to fraction form
    283,383.60/391,071.92 = 156,059.68/x
  3. Step 3: Cross multiply
    283,383.60x = 391,071.92 × 156,059.68
  4. Step 4: Simplify right side
    283,383.60x = 61,030,558,692.19
  5. Step 5: Solve for x
    x = 61,030,558,692.19/283,383.60
  6. Step 6: Final answer
    x = 215,363.76

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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.