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Finding the Fourth Proportional to 220,632.84, 330,905.76 and 60,667.56

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Solution

The fourth proportional to 220,632.84, 330,905.76 and 60,667.56 is: 90,989.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,632.84 : 330,905.76 = 60,667.56 : x
  2. Step 2: Convert to fraction form
    220,632.84/330,905.76 = 60,667.56/x
  3. Step 3: Cross multiply
    220,632.84x = 330,905.76 × 60,667.56
  4. Step 4: Simplify right side
    220,632.84x = 20,075,245,049.15
  5. Step 5: Solve for x
    x = 20,075,245,049.15/220,632.84
  6. Step 6: Final answer
    x = 90,989.38

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1.5x scale

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.