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Finding the Fourth Proportional to 53,806.64, 80,722.90 and 16,870.64

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Solution

The fourth proportional to 53,806.64, 80,722.90 and 16,870.64 is: 25,310.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,806.64 : 80,722.90 = 16,870.64 : x
  2. Step 2: Convert to fraction form
    53,806.64/80,722.90 = 16,870.64/x
  3. Step 3: Cross multiply
    53,806.64x = 80,722.90 × 16,870.64
  4. Step 4: Simplify right side
    53,806.64x = 1,361,846,985.66
  5. Step 5: Solve for x
    x = 1,361,846,985.66/53,806.64
  6. Step 6: Final answer
    x = 25,310.02

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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.