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Finding the Fourth Proportional to 221,928.64, 305,901.65 and 173,444.94

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Solution

The fourth proportional to 221,928.64, 305,901.65 and 173,444.94 is: 239,072.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,928.64 : 305,901.65 = 173,444.94 : x
  2. Step 2: Convert to fraction form
    221,928.64/305,901.65 = 173,444.94/x
  3. Step 3: Cross multiply
    221,928.64x = 305,901.65 × 173,444.94
  4. Step 4: Simplify right side
    221,928.64x = 53,057,093,330.15
  5. Step 5: Solve for x
    x = 53,057,093,330.15/221,928.64
  6. Step 6: Final answer
    x = 239,072.76

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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.