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Finding the Fourth Proportional to 70,808.55, 106,211.78 and 17,500.53

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Solution

The fourth proportional to 70,808.55, 106,211.78 and 17,500.53 is: 26,250.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,808.55 : 106,211.78 = 17,500.53 : x
  2. Step 2: Convert to fraction form
    70,808.55/106,211.78 = 17,500.53/x
  3. Step 3: Cross multiply
    70,808.55x = 106,211.78 × 17,500.53
  4. Step 4: Simplify right side
    70,808.55x = 1,858,762,238.19
  5. Step 5: Solve for x
    x = 1,858,762,238.19/70,808.55
  6. Step 6: Final answer
    x = 26,250.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.