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Finding the Fourth Proportional to 136,473.40, 204,921.30 and 74,265.40

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Solution

The fourth proportional to 136,473.40, 204,921.30 and 74,265.40 is: 111,513.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,473.40 : 204,921.30 = 74,265.40 : x
  2. Step 2: Convert to fraction form
    136,473.40/204,921.30 = 74,265.40/x
  3. Step 3: Cross multiply
    136,473.40x = 204,921.30 × 74,265.40
  4. Step 4: Simplify right side
    136,473.40x = 15,218,562,313.02
  5. Step 5: Solve for x
    x = 15,218,562,313.02/136,473.40
  6. Step 6: Final answer
    x = 111,513.03

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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.