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Finding the Fourth Proportional to 262,090.73, 393,136.61 and 72,551.66

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Solution

The fourth proportional to 262,090.73, 393,136.61 and 72,551.66 is: 108,827.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,090.73 : 393,136.61 = 72,551.66 : x
  2. Step 2: Convert to fraction form
    262,090.73/393,136.61 = 72,551.66/x
  3. Step 3: Cross multiply
    262,090.73x = 393,136.61 × 72,551.66
  4. Step 4: Simplify right side
    262,090.73x = 28,522,711,333.83
  5. Step 5: Solve for x
    x = 28,522,711,333.83/262,090.73
  6. Step 6: Final answer
    x = 108,827.62

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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.