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Finding the Fourth Proportional to 70,495.53, 97,286.31 and 38,664.56

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Solution

The fourth proportional to 70,495.53, 97,286.31 and 38,664.56 is: 53,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,495.53 : 97,286.31 = 38,664.56 : x
  2. Step 2: Convert to fraction form
    70,495.53/97,286.31 = 38,664.56/x
  3. Step 3: Cross multiply
    70,495.53x = 97,286.31 × 38,664.56
  4. Step 4: Simplify right side
    70,495.53x = 3,761,531,883.74
  5. Step 5: Solve for x
    x = 3,761,531,883.74/70,495.53
  6. Step 6: Final answer
    x = 53,358.45

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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.