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Finding the Fourth Proportional to 17,718.88, 26,577.36 and 6,621.28

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Solution

The fourth proportional to 17,718.88, 26,577.36 and 6,621.28 is: 9,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,718.88 : 26,577.36 = 6,621.28 : x
  2. Step 2: Convert to fraction form
    17,718.88/26,577.36 = 6,621.28/x
  3. Step 3: Cross multiply
    17,718.88x = 26,577.36 × 6,621.28
  4. Step 4: Simplify right side
    17,718.88x = 175,976,142.22
  5. Step 5: Solve for x
    x = 175,976,142.22/17,718.88
  6. Step 6: Final answer
    x = 9,931.56

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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.