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Finding the Fourth Proportional to 70,500.75, 97,299.68 and 40,692.75

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Solution

The fourth proportional to 70,500.75, 97,299.68 and 40,692.75 is: 56,160.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,500.75 : 97,299.68 = 40,692.75 : x
  2. Step 2: Convert to fraction form
    70,500.75/97,299.68 = 40,692.75/x
  3. Step 3: Cross multiply
    70,500.75x = 97,299.68 × 40,692.75
  4. Step 4: Simplify right side
    70,500.75x = 3,959,391,349.86
  5. Step 5: Solve for x
    x = 3,959,391,349.86/70,500.75
  6. Step 6: Final answer
    x = 56,160.98

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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.