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Finding the Fourth Proportional to 14,361.91, 21,520.86 and 9,664.51

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Solution

The fourth proportional to 14,361.91, 21,520.86 and 9,664.51 is: 14,481.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,361.91 : 21,520.86 = 9,664.51 : x
  2. Step 2: Convert to fraction form
    14,361.91/21,520.86 = 9,664.51/x
  3. Step 3: Cross multiply
    14,361.91x = 21,520.86 × 9,664.51
  4. Step 4: Simplify right side
    14,361.91x = 207,988,459.07
  5. Step 5: Solve for x
    x = 207,988,459.07/14,361.91
  6. Step 6: Final answer
    x = 14,481.95

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1.5x scale

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.