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Finding the Fourth Proportional to 18,560.54, 27,829.88 and 7,457.87

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Solution

The fourth proportional to 18,560.54, 27,829.88 and 7,457.87 is: 11,182.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,560.54 : 27,829.88 = 7,457.87 : x
  2. Step 2: Convert to fraction form
    18,560.54/27,829.88 = 7,457.87/x
  3. Step 3: Cross multiply
    18,560.54x = 27,829.88 × 7,457.87
  4. Step 4: Simplify right side
    18,560.54x = 207,551,687.41
  5. Step 5: Solve for x
    x = 207,551,687.41/18,560.54
  6. Step 6: Final answer
    x = 11,182.41

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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.