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Finding the Fourth Proportional to 20,192.64, 27,866.88 and 11,809.92

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Solution

The fourth proportional to 20,192.64, 27,866.88 and 11,809.92 is: 16,298.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.64 : 27,866.88 = 11,809.92 : x
  2. Step 2: Convert to fraction form
    20,192.64/27,866.88 = 11,809.92/x
  3. Step 3: Cross multiply
    20,192.64x = 27,866.88 × 11,809.92
  4. Step 4: Simplify right side
    20,192.64x = 329,105,623.45
  5. Step 5: Solve for x
    x = 329,105,623.45/20,192.64
  6. Step 6: Final answer
    x = 16,298.30

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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.