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Finding the Fourth Proportional to 45,062.64, 67,573.44 and 18,751.68

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Solution

The fourth proportional to 45,062.64, 67,573.44 and 18,751.68 is: 28,118.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,062.64 : 67,573.44 = 18,751.68 : x
  2. Step 2: Convert to fraction form
    45,062.64/67,573.44 = 18,751.68/x
  3. Step 3: Cross multiply
    45,062.64x = 67,573.44 × 18,751.68
  4. Step 4: Simplify right side
    45,062.64x = 1,267,115,523.38
  5. Step 5: Solve for x
    x = 1,267,115,523.38/45,062.64
  6. Step 6: Final answer
    x = 28,118.98

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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.