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Finding the Fourth Proportional to 207,295.76, 310,910.60 and 74,151.20

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Solution

The fourth proportional to 207,295.76, 310,910.60 and 74,151.20 is: 111,214.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,295.76 : 310,910.60 = 74,151.20 : x
  2. Step 2: Convert to fraction form
    207,295.76/310,910.60 = 74,151.20/x
  3. Step 3: Cross multiply
    207,295.76x = 310,910.60 × 74,151.20
  4. Step 4: Simplify right side
    207,295.76x = 23,054,394,082.72
  5. Step 5: Solve for x
    x = 23,054,394,082.72/207,295.76
  6. Step 6: Final answer
    x = 111,214.98

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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.