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Finding the Fourth Proportional to 75,460.80, 113,170.95 and 35,939.28

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Solution

The fourth proportional to 75,460.80, 113,170.95 and 35,939.28 is: 53,899.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,460.80 : 113,170.95 = 35,939.28 : x
  2. Step 2: Convert to fraction form
    75,460.80/113,170.95 = 35,939.28/x
  3. Step 3: Cross multiply
    75,460.80x = 113,170.95 × 35,939.28
  4. Step 4: Simplify right side
    75,460.80x = 4,067,282,459.92
  5. Step 5: Solve for x
    x = 4,067,282,459.92/75,460.80
  6. Step 6: Final answer
    x = 53,899.28

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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.