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Finding the Fourth Proportional to 18,642.24, 27,959.31 and 6,159.31

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Solution

The fourth proportional to 18,642.24, 27,959.31 and 6,159.31 is: 9,237.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.24 : 27,959.31 = 6,159.31 : x
  2. Step 2: Convert to fraction form
    18,642.24/27,959.31 = 6,159.31/x
  3. Step 3: Cross multiply
    18,642.24x = 27,959.31 × 6,159.31
  4. Step 4: Simplify right side
    18,642.24x = 172,209,987.78
  5. Step 5: Solve for x
    x = 172,209,987.78/18,642.24
  6. Step 6: Final answer
    x = 9,237.62

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1.5x scale

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.