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Finding the Fourth Proportional to 13,016.08, 17,959.08 and 7,709.97

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Solution

The fourth proportional to 13,016.08, 17,959.08 and 7,709.97 is: 10,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,016.08 : 17,959.08 = 7,709.97 : x
  2. Step 2: Convert to fraction form
    13,016.08/17,959.08 = 7,709.97/x
  3. Step 3: Cross multiply
    13,016.08x = 17,959.08 × 7,709.97
  4. Step 4: Simplify right side
    13,016.08x = 138,463,968.03
  5. Step 5: Solve for x
    x = 138,463,968.03/13,016.08
  6. Step 6: Final answer
    x = 10,637.92

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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.