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Finding the Fourth Proportional to 8,813.99, 13,215.07 and 3,472.29

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Solution

The fourth proportional to 8,813.99, 13,215.07 and 3,472.29 is: 5,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.99 : 13,215.07 = 3,472.29 : x
  2. Step 2: Convert to fraction form
    8,813.99/13,215.07 = 3,472.29/x
  3. Step 3: Cross multiply
    8,813.99x = 13,215.07 × 3,472.29
  4. Step 4: Simplify right side
    8,813.99x = 45,886,471.97
  5. Step 5: Solve for x
    x = 45,886,471.97/8,813.99
  6. Step 6: Final answer
    x = 5,206.10

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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.