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Finding the Fourth Proportional to 75,550.68, 104,257.80 and 42,016.68

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Solution

The fourth proportional to 75,550.68, 104,257.80 and 42,016.68 is: 57,981.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,550.68 : 104,257.80 = 42,016.68 : x
  2. Step 2: Convert to fraction form
    75,550.68/104,257.80 = 42,016.68/x
  3. Step 3: Cross multiply
    75,550.68x = 104,257.80 × 42,016.68
  4. Step 4: Simplify right side
    75,550.68x = 4,380,566,620.10
  5. Step 5: Solve for x
    x = 4,380,566,620.10/75,550.68
  6. Step 6: Final answer
    x = 57,981.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.