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Finding the Fourth Proportional to 154,561.40, 231,654.90 and 65,628.20

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Solution

The fourth proportional to 154,561.40, 231,654.90 and 65,628.20 is: 98,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,561.40 : 231,654.90 = 65,628.20 : x
  2. Step 2: Convert to fraction form
    154,561.40/231,654.90 = 65,628.20/x
  3. Step 3: Cross multiply
    154,561.40x = 231,654.90 × 65,628.20
  4. Step 4: Simplify right side
    154,561.40x = 15,203,094,108.18
  5. Step 5: Solve for x
    x = 15,203,094,108.18/154,561.40
  6. Step 6: Final answer
    x = 98,362.81

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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.