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Finding the Fourth Proportional to 58,707.15, 81,015.90 and 31,849.66

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Solution

The fourth proportional to 58,707.15, 81,015.90 and 31,849.66 is: 43,952.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,707.15 : 81,015.90 = 31,849.66 : x
  2. Step 2: Convert to fraction form
    58,707.15/81,015.90 = 31,849.66/x
  3. Step 3: Cross multiply
    58,707.15x = 81,015.90 × 31,849.66
  4. Step 4: Simplify right side
    58,707.15x = 2,580,328,504.33
  5. Step 5: Solve for x
    x = 2,580,328,504.33/58,707.15
  6. Step 6: Final answer
    x = 43,952.54

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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.