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Finding the Fourth Proportional to 17,425.51, 26,112.74 and 8,642.88

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Solution

The fourth proportional to 17,425.51, 26,112.74 and 8,642.88 is: 12,951.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,425.51 : 26,112.74 = 8,642.88 : x
  2. Step 2: Convert to fraction form
    17,425.51/26,112.74 = 8,642.88/x
  3. Step 3: Cross multiply
    17,425.51x = 26,112.74 × 8,642.88
  4. Step 4: Simplify right side
    17,425.51x = 225,689,278.29
  5. Step 5: Solve for x
    x = 225,689,278.29/17,425.51
  6. Step 6: Final answer
    x = 12,951.66

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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.