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Finding the Fourth Proportional to 22,716.94, 31,345.63 and 12,645.12

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Solution

The fourth proportional to 22,716.94, 31,345.63 and 12,645.12 is: 17,448.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,716.94 : 31,345.63 = 12,645.12 : x
  2. Step 2: Convert to fraction form
    22,716.94/31,345.63 = 12,645.12/x
  3. Step 3: Cross multiply
    22,716.94x = 31,345.63 × 12,645.12
  4. Step 4: Simplify right side
    22,716.94x = 396,369,252.83
  5. Step 5: Solve for x
    x = 396,369,252.83/22,716.94
  6. Step 6: Final answer
    x = 17,448.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.