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Finding the Fourth Proportional to 20,797.14, 28,699.98 and 11,844.63

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Solution

The fourth proportional to 20,797.14, 28,699.98 and 11,844.63 is: 16,345.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.14 : 28,699.98 = 11,844.63 : x
  2. Step 2: Convert to fraction form
    20,797.14/28,699.98 = 11,844.63/x
  3. Step 3: Cross multiply
    20,797.14x = 28,699.98 × 11,844.63
  4. Step 4: Simplify right side
    20,797.14x = 339,940,644.11
  5. Step 5: Solve for x
    x = 339,940,644.11/20,797.14
  6. Step 6: Final answer
    x = 16,345.55

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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.