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Finding the Fourth Proportional to 335,842.70, 503,764.05 and 86,524.70

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Solution

The fourth proportional to 335,842.70, 503,764.05 and 86,524.70 is: 129,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,842.70 : 503,764.05 = 86,524.70 : x
  2. Step 2: Convert to fraction form
    335,842.70/503,764.05 = 86,524.70/x
  3. Step 3: Cross multiply
    335,842.70x = 503,764.05 × 86,524.70
  4. Step 4: Simplify right side
    335,842.70x = 43,588,033,297.04
  5. Step 5: Solve for x
    x = 43,588,033,297.04/335,842.70
  6. Step 6: Final answer
    x = 129,787.05

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.