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Finding the Fourth Proportional to 70,372.22, 97,109.95 and 38,540.43

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Solution

The fourth proportional to 70,372.22, 97,109.95 and 38,540.43 is: 53,183.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,372.22 : 97,109.95 = 38,540.43 : x
  2. Step 2: Convert to fraction form
    70,372.22/97,109.95 = 38,540.43/x
  3. Step 3: Cross multiply
    70,372.22x = 97,109.95 × 38,540.43
  4. Step 4: Simplify right side
    70,372.22x = 3,742,659,533.51
  5. Step 5: Solve for x
    x = 3,742,659,533.51/70,372.22
  6. Step 6: Final answer
    x = 53,183.77

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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.