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Finding the Fourth Proportional to 32,425.20, 48,637.80 and 31,987.80

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Solution

The fourth proportional to 32,425.20, 48,637.80 and 31,987.80 is: 47,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,425.20 : 48,637.80 = 31,987.80 : x
  2. Step 2: Convert to fraction form
    32,425.20/48,637.80 = 31,987.80/x
  3. Step 3: Cross multiply
    32,425.20x = 48,637.80 × 31,987.80
  4. Step 4: Simplify right side
    32,425.20x = 1,555,816,218.84
  5. Step 5: Solve for x
    x = 1,555,816,218.84/32,425.20
  6. Step 6: Final answer
    x = 47,981.70

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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.