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Finding the Fourth Proportional to 58,755.49, 81,083.15 and 31,898.21

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Solution

The fourth proportional to 58,755.49, 81,083.15 and 31,898.21 is: 44,019.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,755.49 : 81,083.15 = 31,898.21 : x
  2. Step 2: Convert to fraction form
    58,755.49/81,083.15 = 31,898.21/x
  3. Step 3: Cross multiply
    58,755.49x = 81,083.15 × 31,898.21
  4. Step 4: Simplify right side
    58,755.49x = 2,586,407,346.16
  5. Step 5: Solve for x
    x = 2,586,407,346.16/58,755.49
  6. Step 6: Final answer
    x = 44,019.84

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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.