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Finding the Fourth Proportional to 143,909.84, 215,734.08 and 50,364.56

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Solution

The fourth proportional to 143,909.84, 215,734.08 and 50,364.56 is: 75,501.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,909.84 : 215,734.08 = 50,364.56 : x
  2. Step 2: Convert to fraction form
    143,909.84/215,734.08 = 50,364.56/x
  3. Step 3: Cross multiply
    143,909.84x = 215,734.08 × 50,364.56
  4. Step 4: Simplify right side
    143,909.84x = 10,865,352,016.20
  5. Step 5: Solve for x
    x = 10,865,352,016.20/143,909.84
  6. Step 6: Final answer
    x = 75,501.11

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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.