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Finding the Fourth Proportional to 64,906.60, 97,359.90 and 38,662.60

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Solution

The fourth proportional to 64,906.60, 97,359.90 and 38,662.60 is: 57,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,906.60 : 97,359.90 = 38,662.60 : x
  2. Step 2: Convert to fraction form
    64,906.60/97,359.90 = 38,662.60/x
  3. Step 3: Cross multiply
    64,906.60x = 97,359.90 × 38,662.60
  4. Step 4: Simplify right side
    64,906.60x = 3,764,186,869.74
  5. Step 5: Solve for x
    x = 3,764,186,869.74/64,906.60
  6. Step 6: Final answer
    x = 57,993.90

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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.