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Finding the Fourth Proportional to 70,704.96, 97,558.85 and 39,661.21

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Solution

The fourth proportional to 70,704.96, 97,558.85 and 39,661.21 is: 54,724.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,704.96 : 97,558.85 = 39,661.21 : x
  2. Step 2: Convert to fraction form
    70,704.96/97,558.85 = 39,661.21/x
  3. Step 3: Cross multiply
    70,704.96x = 97,558.85 × 39,661.21
  4. Step 4: Simplify right side
    70,704.96x = 3,869,301,892.46
  5. Step 5: Solve for x
    x = 3,869,301,892.46/70,704.96
  6. Step 6: Final answer
    x = 54,724.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.