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Finding the Fourth Proportional to 14,079.44, 19,429.08 and 7,791.68

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Solution

The fourth proportional to 14,079.44, 19,429.08 and 7,791.68 is: 10,752.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.44 : 19,429.08 = 7,791.68 : x
  2. Step 2: Convert to fraction form
    14,079.44/19,429.08 = 7,791.68/x
  3. Step 3: Cross multiply
    14,079.44x = 19,429.08 × 7,791.68
  4. Step 4: Simplify right side
    14,079.44x = 151,385,174.05
  5. Step 5: Solve for x
    x = 151,385,174.05/14,079.44
  6. Step 6: Final answer
    x = 10,752.22

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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.