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Finding the Fourth Proportional to 221,798.40, 332,792.90 and 72,084.57

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Solution

The fourth proportional to 221,798.40, 332,792.90 and 72,084.57 is: 108,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,798.40 : 332,792.90 = 72,084.57 : x
  2. Step 2: Convert to fraction form
    221,798.40/332,792.90 = 72,084.57/x
  3. Step 3: Cross multiply
    221,798.40x = 332,792.90 × 72,084.57
  4. Step 4: Simplify right side
    221,798.40x = 23,989,231,611.80
  5. Step 5: Solve for x
    x = 23,989,231,611.80/221,798.40
  6. Step 6: Final answer
    x = 108,157.82

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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.