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Finding the Fourth Proportional to 18,804.35, 28,201.87 and 7,714.14

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Solution

The fourth proportional to 18,804.35, 28,201.87 and 7,714.14 is: 11,569.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.35 : 28,201.87 = 7,714.14 : x
  2. Step 2: Convert to fraction form
    18,804.35/28,201.87 = 7,714.14/x
  3. Step 3: Cross multiply
    18,804.35x = 28,201.87 × 7,714.14
  4. Step 4: Simplify right side
    18,804.35x = 217,553,077.33
  5. Step 5: Solve for x
    x = 217,553,077.33/18,804.35
  6. Step 6: Final answer
    x = 11,569.29

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1.5x scale

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.