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Finding the Fourth Proportional to 16,388.01, 22,623.16 and 12,808.16

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Solution

The fourth proportional to 16,388.01, 22,623.16 and 12,808.16 is: 17,681.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,388.01 : 22,623.16 = 12,808.16 : x
  2. Step 2: Convert to fraction form
    16,388.01/22,623.16 = 12,808.16/x
  3. Step 3: Cross multiply
    16,388.01x = 22,623.16 × 12,808.16
  4. Step 4: Simplify right side
    16,388.01x = 289,761,052.99
  5. Step 5: Solve for x
    x = 289,761,052.99/16,388.01
  6. Step 6: Final answer
    x = 17,681.28

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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.