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Finding the Fourth Proportional to 58,649.19, 80,936.01 and 31,791.66

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Solution

The fourth proportional to 58,649.19, 80,936.01 and 31,791.66 is: 43,872.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,649.19 : 80,936.01 = 31,791.66 : x
  2. Step 2: Convert to fraction form
    58,649.19/80,936.01 = 31,791.66/x
  3. Step 3: Cross multiply
    58,649.19x = 80,936.01 × 31,791.66
  4. Step 4: Simplify right side
    58,649.19x = 2,573,090,111.68
  5. Step 5: Solve for x
    x = 2,573,090,111.68/58,649.19
  6. Step 6: Final answer
    x = 43,872.56

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1.5x scale

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.