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Finding the Fourth Proportional to 5,759.74, 8,631.51 and 3,290.86

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Solution

The fourth proportional to 5,759.74, 8,631.51 and 3,290.86 is: 4,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,759.74 : 8,631.51 = 3,290.86 : x
  2. Step 2: Convert to fraction form
    5,759.74/8,631.51 = 3,290.86/x
  3. Step 3: Cross multiply
    5,759.74x = 8,631.51 × 3,290.86
  4. Step 4: Simplify right side
    5,759.74x = 28,405,091.00
  5. Step 5: Solve for x
    x = 28,405,091.00/5,759.74
  6. Step 6: Final answer
    x = 4,931.66

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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.