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Finding the Fourth Proportional to 18,410.21, 27,625.21 and 7,316.99

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Solution

The fourth proportional to 18,410.21, 27,625.21 and 7,316.99 is: 10,979.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,410.21 : 27,625.21 = 7,316.99 : x
  2. Step 2: Convert to fraction form
    18,410.21/27,625.21 = 7,316.99/x
  3. Step 3: Cross multiply
    18,410.21x = 27,625.21 × 7,316.99
  4. Step 4: Simplify right side
    18,410.21x = 202,133,210.61
  5. Step 5: Solve for x
    x = 202,133,210.61/18,410.21
  6. Step 6: Final answer
    x = 10,979.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.