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Finding the Fourth Proportional to 58,745.68, 81,068.77 and 31,887.97

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Solution

The fourth proportional to 58,745.68, 81,068.77 and 31,887.97 is: 44,005.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,745.68 : 81,068.77 = 31,887.97 : x
  2. Step 2: Convert to fraction form
    58,745.68/81,068.77 = 31,887.97/x
  3. Step 3: Cross multiply
    58,745.68x = 81,068.77 × 31,887.97
  4. Step 4: Simplify right side
    58,745.68x = 2,585,118,505.70
  5. Step 5: Solve for x
    x = 2,585,118,505.70/58,745.68
  6. Step 6: Final answer
    x = 44,005.25

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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.