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Finding the Fourth Proportional to 28,992.86, 43,494.69 and 9,276.38

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Solution

The fourth proportional to 28,992.86, 43,494.69 and 9,276.38 is: 13,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,992.86 : 43,494.69 = 9,276.38 : x
  2. Step 2: Convert to fraction form
    28,992.86/43,494.69 = 9,276.38/x
  3. Step 3: Cross multiply
    28,992.86x = 43,494.69 × 9,276.38
  4. Step 4: Simplify right side
    28,992.86x = 403,473,272.42
  5. Step 5: Solve for x
    x = 403,473,272.42/28,992.86
  6. Step 6: Final answer
    x = 13,916.30

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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.