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Finding the Fourth Proportional to 51,086.70, 70,459.65 and 33,187.44

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Solution

The fourth proportional to 51,086.70, 70,459.65 and 33,187.44 is: 45,772.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,086.70 : 70,459.65 = 33,187.44 : x
  2. Step 2: Convert to fraction form
    51,086.70/70,459.65 = 33,187.44/x
  3. Step 3: Cross multiply
    51,086.70x = 70,459.65 × 33,187.44
  4. Step 4: Simplify right side
    51,086.70x = 2,338,375,406.80
  5. Step 5: Solve for x
    x = 2,338,375,406.80/51,086.70
  6. Step 6: Final answer
    x = 45,772.68

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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.