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Finding the Fourth Proportional to 61,481.40, 92,222.10 and 30,312.60

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Solution

The fourth proportional to 61,481.40, 92,222.10 and 30,312.60 is: 45,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,481.40 : 92,222.10 = 30,312.60 : x
  2. Step 2: Convert to fraction form
    61,481.40/92,222.10 = 30,312.60/x
  3. Step 3: Cross multiply
    61,481.40x = 92,222.10 × 30,312.60
  4. Step 4: Simplify right side
    61,481.40x = 2,795,491,628.46
  5. Step 5: Solve for x
    x = 2,795,491,628.46/61,481.40
  6. Step 6: Final answer
    x = 45,468.90

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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.