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Finding the Fourth Proportional to 64,906.70, 97,349.01 and 18,148.70

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Solution

The fourth proportional to 64,906.70, 97,349.01 and 18,148.70 is: 27,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,906.70 : 97,349.01 = 18,148.70 : x
  2. Step 2: Convert to fraction form
    64,906.70/97,349.01 = 18,148.70/x
  3. Step 3: Cross multiply
    64,906.70x = 97,349.01 × 18,148.70
  4. Step 4: Simplify right side
    64,906.70x = 1,766,757,977.79
  5. Step 5: Solve for x
    x = 1,766,757,977.79/64,906.70
  6. Step 6: Final answer
    x = 27,219.96

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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.