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Finding the Fourth Proportional to 39,473.99, 54,474.48 and 21,568.99

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Solution

The fourth proportional to 39,473.99, 54,474.48 and 21,568.99 is: 29,765.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,473.99 : 54,474.48 = 21,568.99 : x
  2. Step 2: Convert to fraction form
    39,473.99/54,474.48 = 21,568.99/x
  3. Step 3: Cross multiply
    39,473.99x = 54,474.48 × 21,568.99
  4. Step 4: Simplify right side
    39,473.99x = 1,174,959,378.19
  5. Step 5: Solve for x
    x = 1,174,959,378.19/39,473.99
  6. Step 6: Final answer
    x = 29,765.41

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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.