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Finding the Fourth Proportional to 250,604.80, 375,921.60 and 73,139.20

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Solution

The fourth proportional to 250,604.80, 375,921.60 and 73,139.20 is: 109,713.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,604.80 : 375,921.60 = 73,139.20 : x
  2. Step 2: Convert to fraction form
    250,604.80/375,921.60 = 73,139.20/x
  3. Step 3: Cross multiply
    250,604.80x = 375,921.60 × 73,139.20
  4. Step 4: Simplify right side
    250,604.80x = 27,494,605,086.72
  5. Step 5: Solve for x
    x = 27,494,605,086.72/250,604.80
  6. Step 6: Final answer
    x = 109,713.00

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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.