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Finding the Fourth Proportional to 5,920.79, 8,869.78 and 3,700.49

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Solution

The fourth proportional to 5,920.79, 8,869.78 and 3,700.49 is: 5,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.79 : 8,869.78 = 3,700.49 : x
  2. Step 2: Convert to fraction form
    5,920.79/8,869.78 = 3,700.49/x
  3. Step 3: Cross multiply
    5,920.79x = 8,869.78 × 3,700.49
  4. Step 4: Simplify right side
    5,920.79x = 32,822,487.84
  5. Step 5: Solve for x
    x = 32,822,487.84/5,920.79
  6. Step 6: Final answer
    x = 5,543.60

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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.