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Finding the Fourth Proportional to 73,090.52, 109,669.26 and 39,760.64

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Solution

The fourth proportional to 73,090.52, 109,669.26 and 39,760.64 is: 59,659.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,090.52 : 109,669.26 = 39,760.64 : x
  2. Step 2: Convert to fraction form
    73,090.52/109,669.26 = 39,760.64/x
  3. Step 3: Cross multiply
    73,090.52x = 109,669.26 × 39,760.64
  4. Step 4: Simplify right side
    73,090.52x = 4,360,519,965.93
  5. Step 5: Solve for x
    x = 4,360,519,965.93/73,090.52
  6. Step 6: Final answer
    x = 59,659.17

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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.