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Finding the Fourth Proportional to 52,672.65, 72,694.97 and 30,019.80

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Solution

The fourth proportional to 52,672.65, 72,694.97 and 30,019.80 is: 41,431.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,672.65 : 72,694.97 = 30,019.80 : x
  2. Step 2: Convert to fraction form
    52,672.65/72,694.97 = 30,019.80/x
  3. Step 3: Cross multiply
    52,672.65x = 72,694.97 × 30,019.80
  4. Step 4: Simplify right side
    52,672.65x = 2,182,288,460.41
  5. Step 5: Solve for x
    x = 2,182,288,460.41/52,672.65
  6. Step 6: Final answer
    x = 41,431.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.