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Finding the Fourth Proportional to 75,672.60, 113,508.90 and 35,142.03

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Solution

The fourth proportional to 75,672.60, 113,508.90 and 35,142.03 is: 52,713.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,672.60 : 113,508.90 = 35,142.03 : x
  2. Step 2: Convert to fraction form
    75,672.60/113,508.90 = 35,142.03/x
  3. Step 3: Cross multiply
    75,672.60x = 113,508.90 × 35,142.03
  4. Step 4: Simplify right side
    75,672.60x = 3,988,933,169.07
  5. Step 5: Solve for x
    x = 3,988,933,169.07/75,672.60
  6. Step 6: Final answer
    x = 52,713.05

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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.