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Finding the Fourth Proportional to 5,770.65, 8,652.90 and 2,990.43

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Solution

The fourth proportional to 5,770.65, 8,652.90 and 2,990.43 is: 4,484.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,770.65 : 8,652.90 = 2,990.43 : x
  2. Step 2: Convert to fraction form
    5,770.65/8,652.90 = 2,990.43/x
  3. Step 3: Cross multiply
    5,770.65x = 8,652.90 × 2,990.43
  4. Step 4: Simplify right side
    5,770.65x = 25,875,891.75
  5. Step 5: Solve for x
    x = 25,875,891.75/5,770.65
  6. Step 6: Final answer
    x = 4,484.05

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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.