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Finding the Fourth Proportional to 100,847.70, 151,271.55 and 48,359.70

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Solution

The fourth proportional to 100,847.70, 151,271.55 and 48,359.70 is: 72,539.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,847.70 : 151,271.55 = 48,359.70 : x
  2. Step 2: Convert to fraction form
    100,847.70/151,271.55 = 48,359.70/x
  3. Step 3: Cross multiply
    100,847.70x = 151,271.55 × 48,359.70
  4. Step 4: Simplify right side
    100,847.70x = 7,315,446,776.54
  5. Step 5: Solve for x
    x = 7,315,446,776.54/100,847.70
  6. Step 6: Final answer
    x = 72,539.55

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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.