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Finding the Fourth Proportional to 10,118.99, 15,186.33 and 7,020.74

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Solution

The fourth proportional to 10,118.99, 15,186.33 and 7,020.74 is: 10,536.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,118.99 : 15,186.33 = 7,020.74 : x
  2. Step 2: Convert to fraction form
    10,118.99/15,186.33 = 7,020.74/x
  3. Step 3: Cross multiply
    10,118.99x = 15,186.33 × 7,020.74
  4. Step 4: Simplify right side
    10,118.99x = 106,619,198.55
  5. Step 5: Solve for x
    x = 106,619,198.55/10,118.99
  6. Step 6: Final answer
    x = 10,536.55

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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.