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Finding the Fourth Proportional to 267,172.16, 400,808.66 and 107,260.61

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Solution

The fourth proportional to 267,172.16, 400,808.66 and 107,260.61 is: 160,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,172.16 : 400,808.66 = 107,260.61 : x
  2. Step 2: Convert to fraction form
    267,172.16/400,808.66 = 107,260.61/x
  3. Step 3: Cross multiply
    267,172.16x = 400,808.66 × 107,260.61
  4. Step 4: Simplify right side
    267,172.16x = 42,990,978,824.54
  5. Step 5: Solve for x
    x = 42,990,978,824.54/267,172.16
  6. Step 6: Final answer
    x = 160,911.15

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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.