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Finding the Fourth Proportional to 168,751.20, 253,126.80 and 109,653.60

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Solution

The fourth proportional to 168,751.20, 253,126.80 and 109,653.60 is: 164,480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,751.20 : 253,126.80 = 109,653.60 : x
  2. Step 2: Convert to fraction form
    168,751.20/253,126.80 = 109,653.60/x
  3. Step 3: Cross multiply
    168,751.20x = 253,126.80 × 109,653.60
  4. Step 4: Simplify right side
    168,751.20x = 27,756,264,876.48
  5. Step 5: Solve for x
    x = 27,756,264,876.48/168,751.20
  6. Step 6: Final answer
    x = 164,480.40

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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.