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Finding the Fourth Proportional to 146,718.60, 220,142.70 and 67,792.20

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Solution

The fourth proportional to 146,718.60, 220,142.70 and 67,792.20 is: 101,718.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,718.60 : 220,142.70 = 67,792.20 : x
  2. Step 2: Convert to fraction form
    146,718.60/220,142.70 = 67,792.20/x
  3. Step 3: Cross multiply
    146,718.60x = 220,142.70 × 67,792.20
  4. Step 4: Simplify right side
    146,718.60x = 14,923,957,946.94
  5. Step 5: Solve for x
    x = 14,923,957,946.94/146,718.60
  6. Step 6: Final answer
    x = 101,718.24

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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.