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Finding the Fourth Proportional to 70,480.53, 97,206.66 and 61,964.64

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Solution

The fourth proportional to 70,480.53, 97,206.66 and 61,964.64 is: 85,461.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,480.53 : 97,206.66 = 61,964.64 : x
  2. Step 2: Convert to fraction form
    70,480.53/97,206.66 = 61,964.64/x
  3. Step 3: Cross multiply
    70,480.53x = 97,206.66 × 61,964.64
  4. Step 4: Simplify right side
    70,480.53x = 6,023,375,692.50
  5. Step 5: Solve for x
    x = 6,023,375,692.50/70,480.53
  6. Step 6: Final answer
    x = 85,461.56

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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.