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Finding the Fourth Proportional to 19,207.65, 28,773.04 and 15,265.56

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Solution

The fourth proportional to 19,207.65, 28,773.04 and 15,265.56 is: 22,867.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.65 : 28,773.04 = 15,265.56 : x
  2. Step 2: Convert to fraction form
    19,207.65/28,773.04 = 15,265.56/x
  3. Step 3: Cross multiply
    19,207.65x = 28,773.04 × 15,265.56
  4. Step 4: Simplify right side
    19,207.65x = 439,236,386.47
  5. Step 5: Solve for x
    x = 439,236,386.47/19,207.65
  6. Step 6: Final answer
    x = 22,867.79

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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.