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Finding the Fourth Proportional to 283,999.32, 391,920.39 and 156,674.88

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Solution

The fourth proportional to 283,999.32, 391,920.39 and 156,674.88 is: 216,212.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,999.32 : 391,920.39 = 156,674.88 : x
  2. Step 2: Convert to fraction form
    283,999.32/391,920.39 = 156,674.88/x
  3. Step 3: Cross multiply
    283,999.32x = 391,920.39 × 156,674.88
  4. Step 4: Simplify right side
    283,999.32x = 61,404,080,072.80
  5. Step 5: Solve for x
    x = 61,404,080,072.80/283,999.32
  6. Step 6: Final answer
    x = 216,212.07

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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.