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Finding the Fourth Proportional to 3,673.08, 5,509.50 and 899.76

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Solution

The fourth proportional to 3,673.08, 5,509.50 and 899.76 is: 1,349.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,673.08 : 5,509.50 = 899.76 : x
  2. Step 2: Convert to fraction form
    3,673.08/5,509.50 = 899.76/x
  3. Step 3: Cross multiply
    3,673.08x = 5,509.50 × 899.76
  4. Step 4: Simplify right side
    3,673.08x = 4,957,227.72
  5. Step 5: Solve for x
    x = 4,957,227.72/3,673.08
  6. Step 6: Final answer
    x = 1,349.61

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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.