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Finding the Fourth Proportional to 283,917.12, 391,806.72 and 156,590.88

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Solution

The fourth proportional to 283,917.12, 391,806.72 and 156,590.88 is: 216,096.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,917.12 : 391,806.72 = 156,590.88 : x
  2. Step 2: Convert to fraction form
    283,917.12/391,806.72 = 156,590.88/x
  3. Step 3: Cross multiply
    283,917.12x = 391,806.72 × 156,590.88
  4. Step 4: Simplify right side
    283,917.12x = 61,353,359,074.71
  5. Step 5: Solve for x
    x = 61,353,359,074.71/283,917.12
  6. Step 6: Final answer
    x = 216,096.02

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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.