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Finding the Fourth Proportional to 16,879.76, 23,293.80 and 9,326.12

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Solution

The fourth proportional to 16,879.76, 23,293.80 and 9,326.12 is: 12,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.76 : 23,293.80 = 9,326.12 : x
  2. Step 2: Convert to fraction form
    16,879.76/23,293.80 = 9,326.12/x
  3. Step 3: Cross multiply
    16,879.76x = 23,293.80 × 9,326.12
  4. Step 4: Simplify right side
    16,879.76x = 217,240,774.06
  5. Step 5: Solve for x
    x = 217,240,774.06/16,879.76
  6. Step 6: Final answer
    x = 12,869.90

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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.