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Finding the Fourth Proportional to 10,691.15, 16,036.68 and 2,899.97

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Solution

The fourth proportional to 10,691.15, 16,036.68 and 2,899.97 is: 4,349.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,691.15 : 16,036.68 = 2,899.97 : x
  2. Step 2: Convert to fraction form
    10,691.15/16,036.68 = 2,899.97/x
  3. Step 3: Cross multiply
    10,691.15x = 16,036.68 × 2,899.97
  4. Step 4: Simplify right side
    10,691.15x = 46,505,810.72
  5. Step 5: Solve for x
    x = 46,505,810.72/10,691.15
  6. Step 6: Final answer
    x = 4,349.94

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1.5x scale

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.