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Finding the Fourth Proportional to 220,810.23, 331,168.91 and 71,063.91

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Solution

The fourth proportional to 220,810.23, 331,168.91 and 71,063.91 is: 106,580.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,810.23 : 331,168.91 = 71,063.91 : x
  2. Step 2: Convert to fraction form
    220,810.23/331,168.91 = 71,063.91/x
  3. Step 3: Cross multiply
    220,810.23x = 331,168.91 × 71,063.91
  4. Step 4: Simplify right side
    220,810.23x = 23,534,157,259.72
  5. Step 5: Solve for x
    x = 23,534,157,259.72/220,810.23
  6. Step 6: Final answer
    x = 106,580.92

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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.