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Finding the Fourth Proportional to 52,878, 79,317.48 and 17,338.80

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Solution

The fourth proportional to 52,878, 79,317.48 and 17,338.80 is: 26,008.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,878 : 79,317.48 = 17,338.80 : x
  2. Step 2: Convert to fraction form
    52,878/79,317.48 = 17,338.80/x
  3. Step 3: Cross multiply
    52,878x = 79,317.48 × 17,338.80
  4. Step 4: Simplify right side
    52,878x = 1,375,269,922.22
  5. Step 5: Solve for x
    x = 1,375,269,922.22/52,878
  6. Step 6: Final answer
    x = 26,008.36

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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.