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Finding the Fourth Proportional to 17,979.91, 24,807.95 and 11,605.15

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Solution

The fourth proportional to 17,979.91, 24,807.95 and 11,605.15 is: 16,012.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,979.91 : 24,807.95 = 11,605.15 : x
  2. Step 2: Convert to fraction form
    17,979.91/24,807.95 = 11,605.15/x
  3. Step 3: Cross multiply
    17,979.91x = 24,807.95 × 11,605.15
  4. Step 4: Simplify right side
    17,979.91x = 287,899,885.92
  5. Step 5: Solve for x
    x = 287,899,885.92/17,979.91
  6. Step 6: Final answer
    x = 16,012.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.