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Finding the Fourth Proportional to 72,847.69, 100,544.78 and 45,972.16

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Solution

The fourth proportional to 72,847.69, 100,544.78 and 45,972.16 is: 63,451.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,847.69 : 100,544.78 = 45,972.16 : x
  2. Step 2: Convert to fraction form
    72,847.69/100,544.78 = 45,972.16/x
  3. Step 3: Cross multiply
    72,847.69x = 100,544.78 × 45,972.16
  4. Step 4: Simplify right side
    72,847.69x = 4,622,260,713.32
  5. Step 5: Solve for x
    x = 4,622,260,713.32/72,847.69
  6. Step 6: Final answer
    x = 63,451.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.