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Finding the Fourth Proportional to 61,561.58, 92,345.14 and 18,863.88

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Solution

The fourth proportional to 61,561.58, 92,345.14 and 18,863.88 is: 28,296.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,561.58 : 92,345.14 = 18,863.88 : x
  2. Step 2: Convert to fraction form
    61,561.58/92,345.14 = 18,863.88/x
  3. Step 3: Cross multiply
    61,561.58x = 92,345.14 × 18,863.88
  4. Step 4: Simplify right side
    61,561.58x = 1,741,987,210.72
  5. Step 5: Solve for x
    x = 1,741,987,210.72/61,561.58
  6. Step 6: Final answer
    x = 28,296.66

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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.