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Finding the Fourth Proportional to 73,896.40, 110,844.60 and 54,213.40

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Solution

The fourth proportional to 73,896.40, 110,844.60 and 54,213.40 is: 81,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,896.40 : 110,844.60 = 54,213.40 : x
  2. Step 2: Convert to fraction form
    73,896.40/110,844.60 = 54,213.40/x
  3. Step 3: Cross multiply
    73,896.40x = 110,844.60 × 54,213.40
  4. Step 4: Simplify right side
    73,896.40x = 6,009,262,637.64
  5. Step 5: Solve for x
    x = 6,009,262,637.64/73,896.40
  6. Step 6: Final answer
    x = 81,320.10

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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.