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Finding the Fourth Proportional to 52,881.57, 79,216.61 and 31,809.96

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Solution

The fourth proportional to 52,881.57, 79,216.61 and 31,809.96 is: 47,651.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,881.57 : 79,216.61 = 31,809.96 : x
  2. Step 2: Convert to fraction form
    52,881.57/79,216.61 = 31,809.96/x
  3. Step 3: Cross multiply
    52,881.57x = 79,216.61 × 31,809.96
  4. Step 4: Simplify right side
    52,881.57x = 2,519,877,036.39
  5. Step 5: Solve for x
    x = 2,519,877,036.39/52,881.57
  6. Step 6: Final answer
    x = 47,651.33

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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.