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Finding the Fourth Proportional to 72,808.34, 109,212.50 and 22,892.81

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Solution

The fourth proportional to 72,808.34, 109,212.50 and 22,892.81 is: 34,339.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,808.34 : 109,212.50 = 22,892.81 : x
  2. Step 2: Convert to fraction form
    72,808.34/109,212.50 = 22,892.81/x
  3. Step 3: Cross multiply
    72,808.34x = 109,212.50 × 22,892.81
  4. Step 4: Simplify right side
    72,808.34x = 2,500,180,523.29
  5. Step 5: Solve for x
    x = 2,500,180,523.29/72,808.34
  6. Step 6: Final answer
    x = 34,339.21

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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.