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Finding the Fourth Proportional to 283,980.76, 391,891.26 and 156,661.72

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Solution

The fourth proportional to 283,980.76, 391,891.26 and 156,661.72 is: 216,191.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,980.76 : 391,891.26 = 156,661.72 : x
  2. Step 2: Convert to fraction form
    283,980.76/391,891.26 = 156,661.72/x
  3. Step 3: Cross multiply
    283,980.76x = 391,891.26 × 156,661.72
  4. Step 4: Simplify right side
    283,980.76x = 61,394,358,844.57
  5. Step 5: Solve for x
    x = 61,394,358,844.57/283,980.76
  6. Step 6: Final answer
    x = 216,191.97

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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.