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Finding the Fourth Proportional to 12,665.65, 18,982.68 and 6,090.07

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Solution

The fourth proportional to 12,665.65, 18,982.68 and 6,090.07 is: 9,127.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.65 : 18,982.68 = 6,090.07 : x
  2. Step 2: Convert to fraction form
    12,665.65/18,982.68 = 6,090.07/x
  3. Step 3: Cross multiply
    12,665.65x = 18,982.68 × 6,090.07
  4. Step 4: Simplify right side
    12,665.65x = 115,605,849.99
  5. Step 5: Solve for x
    x = 115,605,849.99/12,665.65
  6. Step 6: Final answer
    x = 9,127.51

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