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Finding the Fourth Proportional to 75,428.82, 113,048.90 and 37,998.32

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Solution

The fourth proportional to 75,428.82, 113,048.90 and 37,998.32 is: 56,949.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,428.82 : 113,048.90 = 37,998.32 : x
  2. Step 2: Convert to fraction form
    75,428.82/113,048.90 = 37,998.32/x
  3. Step 3: Cross multiply
    75,428.82x = 113,048.90 × 37,998.32
  4. Step 4: Simplify right side
    75,428.82x = 4,295,667,665.11
  5. Step 5: Solve for x
    x = 4,295,667,665.11/75,428.82
  6. Step 6: Final answer
    x = 56,949.95

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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.