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Finding the Fourth Proportional to 73,218.90, 109,864.80 and 41,653.20

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Solution

The fourth proportional to 73,218.90, 109,864.80 and 41,653.20 is: 62,500.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,218.90 : 109,864.80 = 41,653.20 : x
  2. Step 2: Convert to fraction form
    73,218.90/109,864.80 = 41,653.20/x
  3. Step 3: Cross multiply
    73,218.90x = 109,864.80 × 41,653.20
  4. Step 4: Simplify right side
    73,218.90x = 4,576,220,487.36
  5. Step 5: Solve for x
    x = 4,576,220,487.36/73,218.90
  6. Step 6: Final answer
    x = 62,500.54

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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.