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Finding the Fourth Proportional to 28,846.82, 39,809.14 and 16,918.76

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Solution

The fourth proportional to 28,846.82, 39,809.14 and 16,918.76 is: 23,348.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,846.82 : 39,809.14 = 16,918.76 : x
  2. Step 2: Convert to fraction form
    28,846.82/39,809.14 = 16,918.76/x
  3. Step 3: Cross multiply
    28,846.82x = 39,809.14 × 16,918.76
  4. Step 4: Simplify right side
    28,846.82x = 673,521,285.47
  5. Step 5: Solve for x
    x = 673,521,285.47/28,846.82
  6. Step 6: Final answer
    x = 23,348.20

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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.