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Finding the Fourth Proportional to 73,906.80, 110,929.80 and 38,871.60

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Solution

The fourth proportional to 73,906.80, 110,929.80 and 38,871.60 is: 58,344.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,906.80 : 110,929.80 = 38,871.60 : x
  2. Step 2: Convert to fraction form
    73,906.80/110,929.80 = 38,871.60/x
  3. Step 3: Cross multiply
    73,906.80x = 110,929.80 × 38,871.60
  4. Step 4: Simplify right side
    73,906.80x = 4,312,018,813.68
  5. Step 5: Solve for x
    x = 4,312,018,813.68/73,906.80
  6. Step 6: Final answer
    x = 58,344.01

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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.