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Finding the Fourth Proportional to 19,292.43, 28,859.45 and 15,404.43

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Solution

The fourth proportional to 19,292.43, 28,859.45 and 15,404.43 is: 23,043.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,292.43 : 28,859.45 = 15,404.43 : x
  2. Step 2: Convert to fraction form
    19,292.43/28,859.45 = 15,404.43/x
  3. Step 3: Cross multiply
    19,292.43x = 28,859.45 × 15,404.43
  4. Step 4: Simplify right side
    19,292.43x = 444,563,300.34
  5. Step 5: Solve for x
    x = 444,563,300.34/19,292.43
  6. Step 6: Final answer
    x = 23,043.41

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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.