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Finding the Fourth Proportional to 22,356.68, 30,855.13 and 14,421.97

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Solution

The fourth proportional to 22,356.68, 30,855.13 and 14,421.97 is: 19,904.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,356.68 : 30,855.13 = 14,421.97 : x
  2. Step 2: Convert to fraction form
    22,356.68/30,855.13 = 14,421.97/x
  3. Step 3: Cross multiply
    22,356.68x = 30,855.13 × 14,421.97
  4. Step 4: Simplify right side
    22,356.68x = 444,991,588.16
  5. Step 5: Solve for x
    x = 444,991,588.16/22,356.68
  6. Step 6: Final answer
    x = 19,904.19

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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.