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Finding the Fourth Proportional to 5,609.61, 7,741.16 and 3,219.48

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Solution

The fourth proportional to 5,609.61, 7,741.16 and 3,219.48 is: 4,442.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,609.61 : 7,741.16 = 3,219.48 : x
  2. Step 2: Convert to fraction form
    5,609.61/7,741.16 = 3,219.48/x
  3. Step 3: Cross multiply
    5,609.61x = 7,741.16 × 3,219.48
  4. Step 4: Simplify right side
    5,609.61x = 24,922,509.80
  5. Step 5: Solve for x
    x = 24,922,509.80/5,609.61
  6. Step 6: Final answer
    x = 4,442.83

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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.