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Finding the Fourth Proportional to 39,990.86, 59,860.48 and 27,437.48

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Solution

The fourth proportional to 39,990.86, 59,860.48 and 27,437.48 is: 41,069.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.86 : 59,860.48 = 27,437.48 : x
  2. Step 2: Convert to fraction form
    39,990.86/59,860.48 = 27,437.48/x
  3. Step 3: Cross multiply
    39,990.86x = 59,860.48 × 27,437.48
  4. Step 4: Simplify right side
    39,990.86x = 1,642,420,722.79
  5. Step 5: Solve for x
    x = 1,642,420,722.79/39,990.86
  6. Step 6: Final answer
    x = 41,069.90

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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.