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Finding the Fourth Proportional to 73,313.51, 110,519.64 and 68,431.01

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Solution

The fourth proportional to 73,313.51, 110,519.64 and 68,431.01 is: 103,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,313.51 : 110,519.64 = 68,431.01 : x
  2. Step 2: Convert to fraction form
    73,313.51/110,519.64 = 68,431.01/x
  3. Step 3: Cross multiply
    73,313.51x = 110,519.64 × 68,431.01
  4. Step 4: Simplify right side
    73,313.51x = 7,562,970,037.44
  5. Step 5: Solve for x
    x = 7,562,970,037.44/73,313.51
  6. Step 6: Final answer
    x = 103,159.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.