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Finding the Fourth Proportional to 71,049.66, 98,041.52 and 39,216.50

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Solution

The fourth proportional to 71,049.66, 98,041.52 and 39,216.50 is: 54,114.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,049.66 : 98,041.52 = 39,216.50 : x
  2. Step 2: Convert to fraction form
    71,049.66/98,041.52 = 39,216.50/x
  3. Step 3: Cross multiply
    71,049.66x = 98,041.52 × 39,216.50
  4. Step 4: Simplify right side
    71,049.66x = 3,844,845,269.08
  5. Step 5: Solve for x
    x = 3,844,845,269.08/71,049.66
  6. Step 6: Final answer
    x = 54,114.90

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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.