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Finding the Fourth Proportional to 14,066.66, 19,411.21 and 7,691.99

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Solution

The fourth proportional to 14,066.66, 19,411.21 and 7,691.99 is: 10,614.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,066.66 : 19,411.21 = 7,691.99 : x
  2. Step 2: Convert to fraction form
    14,066.66/19,411.21 = 7,691.99/x
  3. Step 3: Cross multiply
    14,066.66x = 19,411.21 × 7,691.99
  4. Step 4: Simplify right side
    14,066.66x = 149,310,745.77
  5. Step 5: Solve for x
    x = 149,310,745.77/14,066.66
  6. Step 6: Final answer
    x = 10,614.51

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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.