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Finding the Fourth Proportional to 75,448.80, 113,187.69 and 28,697.94

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Solution

The fourth proportional to 75,448.80, 113,187.69 and 28,697.94 is: 43,052.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,448.80 : 113,187.69 = 28,697.94 : x
  2. Step 2: Convert to fraction form
    75,448.80/113,187.69 = 28,697.94/x
  3. Step 3: Cross multiply
    75,448.80x = 113,187.69 × 28,697.94
  4. Step 4: Simplify right side
    75,448.80x = 3,248,253,536.36
  5. Step 5: Solve for x
    x = 3,248,253,536.36/75,448.80
  6. Step 6: Final answer
    x = 43,052.42

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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.