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Finding the Fourth Proportional to 19,718.76, 29,578.12 and 5,867.76

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Solution

The fourth proportional to 19,718.76, 29,578.12 and 5,867.76 is: 8,801.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.76 : 29,578.12 = 5,867.76 : x
  2. Step 2: Convert to fraction form
    19,718.76/29,578.12 = 5,867.76/x
  3. Step 3: Cross multiply
    19,718.76x = 29,578.12 × 5,867.76
  4. Step 4: Simplify right side
    19,718.76x = 173,557,309.41
  5. Step 5: Solve for x
    x = 173,557,309.41/19,718.76
  6. Step 6: Final answer
    x = 8,801.63

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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.