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Finding the Fourth Proportional to 148,049.60, 221,928.60 and 73,181.30

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Solution

The fourth proportional to 148,049.60, 221,928.60 and 73,181.30 is: 109,699.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,049.60 : 221,928.60 = 73,181.30 : x
  2. Step 2: Convert to fraction form
    148,049.60/221,928.60 = 73,181.30/x
  3. Step 3: Cross multiply
    148,049.60x = 221,928.60 × 73,181.30
  4. Step 4: Simplify right side
    148,049.60x = 16,241,023,455.18
  5. Step 5: Solve for x
    x = 16,241,023,455.18/148,049.60
  6. Step 6: Final answer
    x = 109,699.88

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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.