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Finding the Fourth Proportional to 70,694.36, 97,558.52 and 38,865.30

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Solution

The fourth proportional to 70,694.36, 97,558.52 and 38,865.30 is: 53,634.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,694.36 : 97,558.52 = 38,865.30 : x
  2. Step 2: Convert to fraction form
    70,694.36/97,558.52 = 38,865.30/x
  3. Step 3: Cross multiply
    70,694.36x = 97,558.52 × 38,865.30
  4. Step 4: Simplify right side
    70,694.36x = 3,791,640,953.03
  5. Step 5: Solve for x
    x = 3,791,640,953.03/70,694.36
  6. Step 6: Final answer
    x = 53,634.28

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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.