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Finding the Fourth Proportional to 14,691.07, 20,274.11 and 7,977.13

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Solution

The fourth proportional to 14,691.07, 20,274.11 and 7,977.13 is: 11,008.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.07 : 20,274.11 = 7,977.13 : x
  2. Step 2: Convert to fraction form
    14,691.07/20,274.11 = 7,977.13/x
  3. Step 3: Cross multiply
    14,691.07x = 20,274.11 × 7,977.13
  4. Step 4: Simplify right side
    14,691.07x = 161,729,120.53
  5. Step 5: Solve for x
    x = 161,729,120.53/14,691.07
  6. Step 6: Final answer
    x = 11,008.67

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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.