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Finding the Fourth Proportional to 16,396.16, 22,621.07 and 9,320.81

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Solution

The fourth proportional to 16,396.16, 22,621.07 and 9,320.81 is: 12,859.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,396.16 : 22,621.07 = 9,320.81 : x
  2. Step 2: Convert to fraction form
    16,396.16/22,621.07 = 9,320.81/x
  3. Step 3: Cross multiply
    16,396.16x = 22,621.07 × 9,320.81
  4. Step 4: Simplify right side
    16,396.16x = 210,846,605.66
  5. Step 5: Solve for x
    x = 210,846,605.66/16,396.16
  6. Step 6: Final answer
    x = 12,859.52

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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.