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Finding the Fourth Proportional to 73,293.30, 109,940.39 and 20,703.24

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Solution

The fourth proportional to 73,293.30, 109,940.39 and 20,703.24 is: 31,054.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,293.30 : 109,940.39 = 20,703.24 : x
  2. Step 2: Convert to fraction form
    73,293.30/109,940.39 = 20,703.24/x
  3. Step 3: Cross multiply
    73,293.30x = 109,940.39 × 20,703.24
  4. Step 4: Simplify right side
    73,293.30x = 2,276,122,176.35
  5. Step 5: Solve for x
    x = 2,276,122,176.35/73,293.30
  6. Step 6: Final answer
    x = 31,054.98

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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.