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Finding the Fourth Proportional to 104,990.73, 144,887.88 and 57,244.87

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Solution

The fourth proportional to 104,990.73, 144,887.88 and 57,244.87 is: 78,998.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,990.73 : 144,887.88 = 57,244.87 : x
  2. Step 2: Convert to fraction form
    104,990.73/144,887.88 = 57,244.87/x
  3. Step 3: Cross multiply
    104,990.73x = 144,887.88 × 57,244.87
  4. Step 4: Simplify right side
    104,990.73x = 8,294,087,855.18
  5. Step 5: Solve for x
    x = 8,294,087,855.18/104,990.73
  6. Step 6: Final answer
    x = 78,998.29

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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.