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Finding the Fourth Proportional to 18,480.61, 27,731.85 and 6,802.03

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Solution

The fourth proportional to 18,480.61, 27,731.85 and 6,802.03 is: 10,207.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,480.61 : 27,731.85 = 6,802.03 : x
  2. Step 2: Convert to fraction form
    18,480.61/27,731.85 = 6,802.03/x
  3. Step 3: Cross multiply
    18,480.61x = 27,731.85 × 6,802.03
  4. Step 4: Simplify right side
    18,480.61x = 188,632,875.66
  5. Step 5: Solve for x
    x = 188,632,875.66/18,480.61
  6. Step 6: Final answer
    x = 10,207.07

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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.