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Finding the Fourth Proportional to 73,287.42, 109,939.10 and 23,355.78

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Solution

The fourth proportional to 73,287.42, 109,939.10 and 23,355.78 is: 35,036.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,287.42 : 109,939.10 = 23,355.78 : x
  2. Step 2: Convert to fraction form
    73,287.42/109,939.10 = 23,355.78/x
  3. Step 3: Cross multiply
    73,287.42x = 109,939.10 × 23,355.78
  4. Step 4: Simplify right side
    73,287.42x = 2,567,713,316.22
  5. Step 5: Solve for x
    x = 2,567,713,316.22/73,287.42
  6. Step 6: Final answer
    x = 35,036.21

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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.