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Finding the Fourth Proportional to 28,882.99, 39,859.11 and 16,305.31

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Solution

The fourth proportional to 28,882.99, 39,859.11 and 16,305.31 is: 22,501.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,882.99 : 39,859.11 = 16,305.31 : x
  2. Step 2: Convert to fraction form
    28,882.99/39,859.11 = 16,305.31/x
  3. Step 3: Cross multiply
    28,882.99x = 39,859.11 × 16,305.31
  4. Step 4: Simplify right side
    28,882.99x = 649,914,864.05
  5. Step 5: Solve for x
    x = 649,914,864.05/28,882.99
  6. Step 6: Final answer
    x = 22,501.65

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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.