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Finding the Fourth Proportional to 75,683.72, 104,443.54 and 43,871.08

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Solution

The fourth proportional to 75,683.72, 104,443.54 and 43,871.08 is: 60,542.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,683.72 : 104,443.54 = 43,871.08 : x
  2. Step 2: Convert to fraction form
    75,683.72/104,443.54 = 43,871.08/x
  3. Step 3: Cross multiply
    75,683.72x = 104,443.54 × 43,871.08
  4. Step 4: Simplify right side
    75,683.72x = 4,582,050,898.82
  5. Step 5: Solve for x
    x = 4,582,050,898.82/75,683.72
  6. Step 6: Final answer
    x = 60,542.09

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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.