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Finding the Fourth Proportional to 5,751.45, 8,619.73 and 2,415.92

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Solution

The fourth proportional to 5,751.45, 8,619.73 and 2,415.92 is: 3,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,751.45 : 8,619.73 = 2,415.92 : x
  2. Step 2: Convert to fraction form
    5,751.45/8,619.73 = 2,415.92/x
  3. Step 3: Cross multiply
    5,751.45x = 8,619.73 × 2,415.92
  4. Step 4: Simplify right side
    5,751.45x = 20,824,528.96
  5. Step 5: Solve for x
    x = 20,824,528.96/5,751.45
  6. Step 6: Final answer
    x = 3,620.74

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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.