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Finding the Fourth Proportional to 171,245.66, 236,366.50 and 99,639.52

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Solution

The fourth proportional to 171,245.66, 236,366.50 and 99,639.52 is: 137,530.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,245.66 : 236,366.50 = 99,639.52 : x
  2. Step 2: Convert to fraction form
    171,245.66/236,366.50 = 99,639.52/x
  3. Step 3: Cross multiply
    171,245.66x = 236,366.50 × 99,639.52
  4. Step 4: Simplify right side
    171,245.66x = 23,551,444,604.08
  5. Step 5: Solve for x
    x = 23,551,444,604.08/171,245.66
  6. Step 6: Final answer
    x = 137,530.17

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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.