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Finding the Fourth Proportional to 12,791.90, 19,176.16 and 10,830.17

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Solution

The fourth proportional to 12,791.90, 19,176.16 and 10,830.17 is: 16,235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.90 : 19,176.16 = 10,830.17 : x
  2. Step 2: Convert to fraction form
    12,791.90/19,176.16 = 10,830.17/x
  3. Step 3: Cross multiply
    12,791.90x = 19,176.16 × 10,830.17
  4. Step 4: Simplify right side
    12,791.90x = 207,680,987.33
  5. Step 5: Solve for x
    x = 207,680,987.33/12,791.90
  6. Step 6: Final answer
    x = 16,235.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.