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Finding the Fourth Proportional to 19,674.28, 29,486.22 and 10,789.48

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Solution

The fourth proportional to 19,674.28, 29,486.22 and 10,789.48 is: 16,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,674.28 : 29,486.22 = 10,789.48 : x
  2. Step 2: Convert to fraction form
    19,674.28/29,486.22 = 10,789.48/x
  3. Step 3: Cross multiply
    19,674.28x = 29,486.22 × 10,789.48
  4. Step 4: Simplify right side
    19,674.28x = 318,140,980.97
  5. Step 5: Solve for x
    x = 318,140,980.97/19,674.28
  6. Step 6: Final answer
    x = 16,170.40

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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.