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Finding the Fourth Proportional to 70,956.54, 97,917.93 and 39,125.43

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Solution

The fourth proportional to 70,956.54, 97,917.93 and 39,125.43 is: 53,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956.54 : 97,917.93 = 39,125.43 : x
  2. Step 2: Convert to fraction form
    70,956.54/97,917.93 = 39,125.43/x
  3. Step 3: Cross multiply
    70,956.54x = 97,917.93 × 39,125.43
  4. Step 4: Simplify right side
    70,956.54x = 3,831,081,115.96
  5. Step 5: Solve for x
    x = 3,831,081,115.96/70,956.54
  6. Step 6: Final answer
    x = 53,991.94

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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.