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Finding the Fourth Proportional to 17,808.51, 26,718.91 and 6,718.38

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Solution

The fourth proportional to 17,808.51, 26,718.91 and 6,718.38 is: 10,079.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,808.51 : 26,718.91 = 6,718.38 : x
  2. Step 2: Convert to fraction form
    17,808.51/26,718.91 = 6,718.38/x
  3. Step 3: Cross multiply
    17,808.51x = 26,718.91 × 6,718.38
  4. Step 4: Simplify right side
    17,808.51x = 179,507,656.97
  5. Step 5: Solve for x
    x = 179,507,656.97/17,808.51
  6. Step 6: Final answer
    x = 10,079.88

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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.