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Finding the Fourth Proportional to 72,090.54, 108,102.87 and 22,153.23

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Solution

The fourth proportional to 72,090.54, 108,102.87 and 22,153.23 is: 33,219.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,090.54 : 108,102.87 = 22,153.23 : x
  2. Step 2: Convert to fraction form
    72,090.54/108,102.87 = 22,153.23/x
  3. Step 3: Cross multiply
    72,090.54x = 108,102.87 × 22,153.23
  4. Step 4: Simplify right side
    72,090.54x = 2,394,827,742.77
  5. Step 5: Solve for x
    x = 2,394,827,742.77/72,090.54
  6. Step 6: Final answer
    x = 33,219.72

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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.