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Finding the Fourth Proportional to 75,859.38, 113,858.92 and 38,445.60

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Solution

The fourth proportional to 75,859.38, 113,858.92 and 38,445.60 is: 57,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,859.38 : 113,858.92 = 38,445.60 : x
  2. Step 2: Convert to fraction form
    75,859.38/113,858.92 = 38,445.60/x
  3. Step 3: Cross multiply
    75,859.38x = 113,858.92 × 38,445.60
  4. Step 4: Simplify right side
    75,859.38x = 4,377,374,494.75
  5. Step 5: Solve for x
    x = 4,377,374,494.75/75,859.38
  6. Step 6: Final answer
    x = 57,703.80

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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.