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Finding the Fourth Proportional to 168,801.10, 253,201.65 and 109,314.70

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Solution

The fourth proportional to 168,801.10, 253,201.65 and 109,314.70 is: 163,972.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,801.10 : 253,201.65 = 109,314.70 : x
  2. Step 2: Convert to fraction form
    168,801.10/253,201.65 = 109,314.70/x
  3. Step 3: Cross multiply
    168,801.10x = 253,201.65 × 109,314.70
  4. Step 4: Simplify right side
    168,801.10x = 27,678,662,409.26
  5. Step 5: Solve for x
    x = 27,678,662,409.26/168,801.10
  6. Step 6: Final answer
    x = 163,972.05

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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.