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Finding the Fourth Proportional to 70,695.11, 97,561.11 and 38,431.90

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Solution

The fourth proportional to 70,695.11, 97,561.11 and 38,431.90 is: 53,037.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,695.11 : 97,561.11 = 38,431.90 : x
  2. Step 2: Convert to fraction form
    70,695.11/97,561.11 = 38,431.90/x
  3. Step 3: Cross multiply
    70,695.11x = 97,561.11 × 38,431.90
  4. Step 4: Simplify right side
    70,695.11x = 3,749,458,823.41
  5. Step 5: Solve for x
    x = 3,749,458,823.41/70,695.11
  6. Step 6: Final answer
    x = 53,037.03

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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.