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Finding the Fourth Proportional to 19,763.88, 27,274.68 and 10,811.88

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Solution

The fourth proportional to 19,763.88, 27,274.68 and 10,811.88 is: 14,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,763.88 : 27,274.68 = 10,811.88 : x
  2. Step 2: Convert to fraction form
    19,763.88/27,274.68 = 10,811.88/x
  3. Step 3: Cross multiply
    19,763.88x = 27,274.68 × 10,811.88
  4. Step 4: Simplify right side
    19,763.88x = 294,890,567.20
  5. Step 5: Solve for x
    x = 294,890,567.20/19,763.88
  6. Step 6: Final answer
    x = 14,920.68

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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.