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Finding the Fourth Proportional to 82,936.62, 124,441.65 and 43,484.31

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Solution

The fourth proportional to 82,936.62, 124,441.65 and 43,484.31 is: 65,245.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,936.62 : 124,441.65 = 43,484.31 : x
  2. Step 2: Convert to fraction form
    82,936.62/124,441.65 = 43,484.31/x
  3. Step 3: Cross multiply
    82,936.62x = 124,441.65 × 43,484.31
  4. Step 4: Simplify right side
    82,936.62x = 5,411,259,285.51
  5. Step 5: Solve for x
    x = 5,411,259,285.51/82,936.62
  6. Step 6: Final answer
    x = 65,245.72

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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.