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Finding the Fourth Proportional to 14,198.78, 21,291.93 and 4,836.21

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Solution

The fourth proportional to 14,198.78, 21,291.93 and 4,836.21 is: 7,252.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,198.78 : 21,291.93 = 4,836.21 : x
  2. Step 2: Convert to fraction form
    14,198.78/21,291.93 = 4,836.21/x
  3. Step 3: Cross multiply
    14,198.78x = 21,291.93 × 4,836.21
  4. Step 4: Simplify right side
    14,198.78x = 102,972,244.79
  5. Step 5: Solve for x
    x = 102,972,244.79/14,198.78
  6. Step 6: Final answer
    x = 7,252.19

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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.