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Finding the Fourth Proportional to 19,793.93, 29,681.24 and 7,319.79

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Solution

The fourth proportional to 19,793.93, 29,681.24 and 7,319.79 is: 10,976.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,793.93 : 29,681.24 = 7,319.79 : x
  2. Step 2: Convert to fraction form
    19,793.93/29,681.24 = 7,319.79/x
  3. Step 3: Cross multiply
    19,793.93x = 29,681.24 × 7,319.79
  4. Step 4: Simplify right side
    19,793.93x = 217,260,407.14
  5. Step 5: Solve for x
    x = 217,260,407.14/19,793.93
  6. Step 6: Final answer
    x = 10,976.12

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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.