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Finding the Fourth Proportional to 58,644.81, 87,917.67 and 39,872.12

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Solution

The fourth proportional to 58,644.81, 87,917.67 and 39,872.12 is: 59,774.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,644.81 : 87,917.67 = 39,872.12 : x
  2. Step 2: Convert to fraction form
    58,644.81/87,917.67 = 39,872.12/x
  3. Step 3: Cross multiply
    58,644.81x = 87,917.67 × 39,872.12
  4. Step 4: Simplify right side
    58,644.81x = 3,505,463,448.77
  5. Step 5: Solve for x
    x = 3,505,463,448.77/58,644.81
  6. Step 6: Final answer
    x = 59,774.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.