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Finding the Fourth Proportional to 19,107.78, 26,369.52 and 10,724.28

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Solution

The fourth proportional to 19,107.78, 26,369.52 and 10,724.28 is: 14,799.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,107.78 : 26,369.52 = 10,724.28 : x
  2. Step 2: Convert to fraction form
    19,107.78/26,369.52 = 10,724.28/x
  3. Step 3: Cross multiply
    19,107.78x = 26,369.52 × 10,724.28
  4. Step 4: Simplify right side
    19,107.78x = 282,794,115.95
  5. Step 5: Solve for x
    x = 282,794,115.95/19,107.78
  6. Step 6: Final answer
    x = 14,799.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.