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Finding the Fourth Proportional to 19,053.57, 28,566.51 and 7,963.43

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Solution

The fourth proportional to 19,053.57, 28,566.51 and 7,963.43 is: 11,939.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,053.57 : 28,566.51 = 7,963.43 : x
  2. Step 2: Convert to fraction form
    19,053.57/28,566.51 = 7,963.43/x
  3. Step 3: Cross multiply
    19,053.57x = 28,566.51 × 7,963.43
  4. Step 4: Simplify right side
    19,053.57x = 227,487,259.90
  5. Step 5: Solve for x
    x = 227,487,259.90/19,053.57
  6. Step 6: Final answer
    x = 11,939.35

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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.