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Finding the Fourth Proportional to 70,162.20, 105,243.30 and 48,000.60

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Solution

The fourth proportional to 70,162.20, 105,243.30 and 48,000.60 is: 72,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,162.20 : 105,243.30 = 48,000.60 : x
  2. Step 2: Convert to fraction form
    70,162.20/105,243.30 = 48,000.60/x
  3. Step 3: Cross multiply
    70,162.20x = 105,243.30 × 48,000.60
  4. Step 4: Simplify right side
    70,162.20x = 5,051,741,545.98
  5. Step 5: Solve for x
    x = 5,051,741,545.98/70,162.20
  6. Step 6: Final answer
    x = 72,000.90

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1.5x scale

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.