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Finding the Fourth Proportional to 70,692.75, 97,558.28 and 38,863.95

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Solution

The fourth proportional to 70,692.75, 97,558.28 and 38,863.95 is: 53,633.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,692.75 : 97,558.28 = 38,863.95 : x
  2. Step 2: Convert to fraction form
    70,692.75/97,558.28 = 38,863.95/x
  3. Step 3: Cross multiply
    70,692.75x = 97,558.28 × 38,863.95
  4. Step 4: Simplify right side
    70,692.75x = 3,791,499,921.69
  5. Step 5: Solve for x
    x = 3,791,499,921.69/70,692.75
  6. Step 6: Final answer
    x = 53,633.50

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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.