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Finding the Fourth Proportional to 29,206.92, 40,291.50 and 19,131

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Solution

The fourth proportional to 29,206.92, 40,291.50 and 19,131 is: 26,391.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,206.92 : 40,291.50 = 19,131 : x
  2. Step 2: Convert to fraction form
    29,206.92/40,291.50 = 19,131/x
  3. Step 3: Cross multiply
    29,206.92x = 40,291.50 × 19,131
  4. Step 4: Simplify right side
    29,206.92x = 770,816,686.50
  5. Step 5: Solve for x
    x = 770,816,686.50/29,206.92
  6. Step 6: Final answer
    x = 26,391.58

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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.