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Finding the Fourth Proportional to 126,475.70, 189,724.35 and 43,369.70

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Solution

The fourth proportional to 126,475.70, 189,724.35 and 43,369.70 is: 65,058.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,475.70 : 189,724.35 = 43,369.70 : x
  2. Step 2: Convert to fraction form
    126,475.70/189,724.35 = 43,369.70/x
  3. Step 3: Cross multiply
    126,475.70x = 189,724.35 × 43,369.70
  4. Step 4: Simplify right side
    126,475.70x = 8,228,288,142.20
  5. Step 5: Solve for x
    x = 8,228,288,142.20/126,475.70
  6. Step 6: Final answer
    x = 65,058.25

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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.