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Finding the Fourth Proportional to 99,662.76, 137,541.42 and 60,917.24

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Solution

The fourth proportional to 99,662.76, 137,541.42 and 60,917.24 is: 84,069.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,662.76 : 137,541.42 = 60,917.24 : x
  2. Step 2: Convert to fraction form
    99,662.76/137,541.42 = 60,917.24/x
  3. Step 3: Cross multiply
    99,662.76x = 137,541.42 × 60,917.24
  4. Step 4: Simplify right side
    99,662.76x = 8,378,643,692.08
  5. Step 5: Solve for x
    x = 8,378,643,692.08/99,662.76
  6. Step 6: Final answer
    x = 84,069.95

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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.