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Finding the Fourth Proportional to 52,685.53, 79,028.29 and 19,393.31

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Solution

The fourth proportional to 52,685.53, 79,028.29 and 19,393.31 is: 29,089.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,685.53 : 79,028.29 = 19,393.31 : x
  2. Step 2: Convert to fraction form
    52,685.53/79,028.29 = 19,393.31/x
  3. Step 3: Cross multiply
    52,685.53x = 79,028.29 × 19,393.31
  4. Step 4: Simplify right side
    52,685.53x = 1,532,620,126.74
  5. Step 5: Solve for x
    x = 1,532,620,126.74/52,685.53
  6. Step 6: Final answer
    x = 29,089.96

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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.