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Finding the Fourth Proportional to 14,796.84, 20,418.85 and 8,666.41

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Solution

The fourth proportional to 14,796.84, 20,418.85 and 8,666.41 is: 11,959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,796.84 : 20,418.85 = 8,666.41 : x
  2. Step 2: Convert to fraction form
    14,796.84/20,418.85 = 8,666.41/x
  3. Step 3: Cross multiply
    14,796.84x = 20,418.85 × 8,666.41
  4. Step 4: Simplify right side
    14,796.84x = 176,958,125.83
  5. Step 5: Solve for x
    x = 176,958,125.83/14,796.84
  6. Step 6: Final answer
    x = 11,959.18

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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.