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Finding the Fourth Proportional to 19,670.80, 27,146.01 and 10,718.31

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Solution

The fourth proportional to 19,670.80, 27,146.01 and 10,718.31 is: 14,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.80 : 27,146.01 = 10,718.31 : x
  2. Step 2: Convert to fraction form
    19,670.80/27,146.01 = 10,718.31/x
  3. Step 3: Cross multiply
    19,670.80x = 27,146.01 × 10,718.31
  4. Step 4: Simplify right side
    19,670.80x = 290,959,350.44
  5. Step 5: Solve for x
    x = 290,959,350.44/19,670.80
  6. Step 6: Final answer
    x = 14,791.43

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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.