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Finding the Fourth Proportional to 60,699.71, 91,060.52 and 18,579.03

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Solution

The fourth proportional to 60,699.71, 91,060.52 and 18,579.03 is: 27,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,699.71 : 91,060.52 = 18,579.03 : x
  2. Step 2: Convert to fraction form
    60,699.71/91,060.52 = 18,579.03/x
  3. Step 3: Cross multiply
    60,699.71x = 91,060.52 × 18,579.03
  4. Step 4: Simplify right side
    60,699.71x = 1,691,816,040.00
  5. Step 5: Solve for x
    x = 1,691,816,040.00/60,699.71
  6. Step 6: Final answer
    x = 27,871.90

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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.