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Finding the Fourth Proportional to 61,208.50, 91,621.95 and 47,131.96

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Solution

The fourth proportional to 61,208.50, 91,621.95 and 47,131.96 is: 70,551.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,208.50 : 91,621.95 = 47,131.96 : x
  2. Step 2: Convert to fraction form
    61,208.50/91,621.95 = 47,131.96/x
  3. Step 3: Cross multiply
    61,208.50x = 91,621.95 × 47,131.96
  4. Step 4: Simplify right side
    61,208.50x = 4,318,321,676.72
  5. Step 5: Solve for x
    x = 4,318,321,676.72/61,208.50
  6. Step 6: Final answer
    x = 70,551.02

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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.