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Finding the Fourth Proportional to 17,515.64, 26,264.18 and 7,643.39

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Solution

The fourth proportional to 17,515.64, 26,264.18 and 7,643.39 is: 11,461.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,515.64 : 26,264.18 = 7,643.39 : x
  2. Step 2: Convert to fraction form
    17,515.64/26,264.18 = 7,643.39/x
  3. Step 3: Cross multiply
    17,515.64x = 26,264.18 × 7,643.39
  4. Step 4: Simplify right side
    17,515.64x = 200,747,370.77
  5. Step 5: Solve for x
    x = 200,747,370.77/17,515.64
  6. Step 6: Final answer
    x = 11,461.04

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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.