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Finding the Fourth Proportional to 73,319.68, 109,900.90 and 48,009.58

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Solution

The fourth proportional to 73,319.68, 109,900.90 and 48,009.58 is: 71,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,319.68 : 109,900.90 = 48,009.58 : x
  2. Step 2: Convert to fraction form
    73,319.68/109,900.90 = 48,009.58/x
  3. Step 3: Cross multiply
    73,319.68x = 109,900.90 × 48,009.58
  4. Step 4: Simplify right side
    73,319.68x = 5,276,295,835.88
  5. Step 5: Solve for x
    x = 5,276,295,835.88/73,319.68
  6. Step 6: Final answer
    x = 71,962.89

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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.