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Finding the Fourth Proportional to 18,893.66, 28,340.35 and 5,746.01

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Solution

The fourth proportional to 18,893.66, 28,340.35 and 5,746.01 is: 8,618.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.66 : 28,340.35 = 5,746.01 : x
  2. Step 2: Convert to fraction form
    18,893.66/28,340.35 = 5,746.01/x
  3. Step 3: Cross multiply
    18,893.66x = 28,340.35 × 5,746.01
  4. Step 4: Simplify right side
    18,893.66x = 162,843,778.44
  5. Step 5: Solve for x
    x = 162,843,778.44/18,893.66
  6. Step 6: Final answer
    x = 8,618.97

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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.