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Finding the Fourth Proportional to 207,401.01, 311,203.16 and 74,291.55

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Solution

The fourth proportional to 207,401.01, 311,203.16 and 74,291.55 is: 111,473.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,401.01 : 311,203.16 = 74,291.55 : x
  2. Step 2: Convert to fraction form
    207,401.01/311,203.16 = 74,291.55/x
  3. Step 3: Cross multiply
    207,401.01x = 311,203.16 × 74,291.55
  4. Step 4: Simplify right side
    207,401.01x = 23,119,764,749.84
  5. Step 5: Solve for x
    x = 23,119,764,749.84/207,401.01
  6. Step 6: Final answer
    x = 111,473.73

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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.