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Finding the Fourth Proportional to 283,747.32, 391,568.66 and 154,685.80

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Solution

The fourth proportional to 283,747.32, 391,568.66 and 154,685.80 is: 213,464.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,747.32 : 391,568.66 = 154,685.80 : x
  2. Step 2: Convert to fraction form
    283,747.32/391,568.66 = 154,685.80/x
  3. Step 3: Cross multiply
    283,747.32x = 391,568.66 × 154,685.80
  4. Step 4: Simplify right side
    283,747.32x = 60,570,111,427.03
  5. Step 5: Solve for x
    x = 60,570,111,427.03/283,747.32
  6. Step 6: Final answer
    x = 213,464.96

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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.