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Finding the Fourth Proportional to 14,343.18, 19,791.99 and 8,055.42

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Solution

The fourth proportional to 14,343.18, 19,791.99 and 8,055.42 is: 11,115.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,343.18 : 19,791.99 = 8,055.42 : x
  2. Step 2: Convert to fraction form
    14,343.18/19,791.99 = 8,055.42/x
  3. Step 3: Cross multiply
    14,343.18x = 19,791.99 × 8,055.42
  4. Step 4: Simplify right side
    14,343.18x = 159,432,792.09
  5. Step 5: Solve for x
    x = 159,432,792.09/14,343.18
  6. Step 6: Final answer
    x = 11,115.58

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1.5x scale

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.