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Finding the Fourth Proportional to 70,853.70, 106,280.55 and 48,735.30

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Solution

The fourth proportional to 70,853.70, 106,280.55 and 48,735.30 is: 73,102.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,853.70 : 106,280.55 = 48,735.30 : x
  2. Step 2: Convert to fraction form
    70,853.70/106,280.55 = 48,735.30/x
  3. Step 3: Cross multiply
    70,853.70x = 106,280.55 × 48,735.30
  4. Step 4: Simplify right side
    70,853.70x = 5,179,614,488.42
  5. Step 5: Solve for x
    x = 5,179,614,488.42/70,853.70
  6. Step 6: Final answer
    x = 73,102.95

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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.