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Finding the Fourth Proportional to 64,808.60, 97,212.90 and 27,872.60

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Solution

The fourth proportional to 64,808.60, 97,212.90 and 27,872.60 is: 41,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,808.60 : 97,212.90 = 27,872.60 : x
  2. Step 2: Convert to fraction form
    64,808.60/97,212.90 = 27,872.60/x
  3. Step 3: Cross multiply
    64,808.60x = 97,212.90 × 27,872.60
  4. Step 4: Simplify right side
    64,808.60x = 2,709,576,276.54
  5. Step 5: Solve for x
    x = 2,709,576,276.54/64,808.60
  6. Step 6: Final answer
    x = 41,808.90

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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.