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Finding the Fourth Proportional to 22,457.52, 30,984.12 and 12,896.28

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Solution

The fourth proportional to 22,457.52, 30,984.12 and 12,896.28 is: 17,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,457.52 : 30,984.12 = 12,896.28 : x
  2. Step 2: Convert to fraction form
    22,457.52/30,984.12 = 12,896.28/x
  3. Step 3: Cross multiply
    22,457.52x = 30,984.12 × 12,896.28
  4. Step 4: Simplify right side
    22,457.52x = 399,579,887.07
  5. Step 5: Solve for x
    x = 399,579,887.07/22,457.52
  6. Step 6: Final answer
    x = 17,792.70

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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.