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Finding the Fourth Proportional to 73,812.10, 110,718.68 and 31,656.61

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Solution

The fourth proportional to 73,812.10, 110,718.68 and 31,656.61 is: 47,485.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,812.10 : 110,718.68 = 31,656.61 : x
  2. Step 2: Convert to fraction form
    73,812.10/110,718.68 = 31,656.61/x
  3. Step 3: Cross multiply
    73,812.10x = 110,718.68 × 31,656.61
  4. Step 4: Simplify right side
    73,812.10x = 3,504,978,072.47
  5. Step 5: Solve for x
    x = 3,504,978,072.47/73,812.10
  6. Step 6: Final answer
    x = 47,485.14

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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.