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Finding the Fourth Proportional to 82,548.70, 123,713.70 and 73,144.60

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Solution

The fourth proportional to 82,548.70, 123,713.70 and 73,144.60 is: 109,620.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,548.70 : 123,713.70 = 73,144.60 : x
  2. Step 2: Convert to fraction form
    82,548.70/123,713.70 = 73,144.60/x
  3. Step 3: Cross multiply
    82,548.70x = 123,713.70 × 73,144.60
  4. Step 4: Simplify right side
    82,548.70x = 9,048,989,101.02
  5. Step 5: Solve for x
    x = 9,048,989,101.02/82,548.70
  6. Step 6: Final answer
    x = 109,620.01

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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.