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Finding the Fourth Proportional to 168,949.64, 253,480.76 and 56,640.96

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Solution

The fourth proportional to 168,949.64, 253,480.76 and 56,640.96 is: 84,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,949.64 : 253,480.76 = 56,640.96 : x
  2. Step 2: Convert to fraction form
    168,949.64/253,480.76 = 56,640.96/x
  3. Step 3: Cross multiply
    168,949.64x = 253,480.76 × 56,640.96
  4. Step 4: Simplify right side
    168,949.64x = 14,357,393,587.93
  5. Step 5: Solve for x
    x = 14,357,393,587.93/168,949.64
  6. Step 6: Final answer
    x = 84,980.31

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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.