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Finding the Fourth Proportional to 21,465.76, 29,633.87 and 16,674.97

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Solution

The fourth proportional to 21,465.76, 29,633.87 and 16,674.97 is: 23,020.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,465.76 : 29,633.87 = 16,674.97 : x
  2. Step 2: Convert to fraction form
    21,465.76/29,633.87 = 16,674.97/x
  3. Step 3: Cross multiply
    21,465.76x = 29,633.87 × 16,674.97
  4. Step 4: Simplify right side
    21,465.76x = 494,143,860.84
  5. Step 5: Solve for x
    x = 494,143,860.84/21,465.76
  6. Step 6: Final answer
    x = 23,020.10

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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.