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Finding the Fourth Proportional to 207,235.20, 310,919.04 and 74,113.92

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Solution

The fourth proportional to 207,235.20, 310,919.04 and 74,113.92 is: 111,194.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,235.20 : 310,919.04 = 74,113.92 : x
  2. Step 2: Convert to fraction form
    207,235.20/310,919.04 = 74,113.92/x
  3. Step 3: Cross multiply
    207,235.20x = 310,919.04 × 74,113.92
  4. Step 4: Simplify right side
    207,235.20x = 23,043,428,857.04
  5. Step 5: Solve for x
    x = 23,043,428,857.04/207,235.20
  6. Step 6: Final answer
    x = 111,194.57

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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.