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Finding the Fourth Proportional to 16,695.36, 25,047.84 and 7,918.20

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Solution

The fourth proportional to 16,695.36, 25,047.84 and 7,918.20 is: 11,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,695.36 : 25,047.84 = 7,918.20 : x
  2. Step 2: Convert to fraction form
    16,695.36/25,047.84 = 7,918.20/x
  3. Step 3: Cross multiply
    16,695.36x = 25,047.84 × 7,918.20
  4. Step 4: Simplify right side
    16,695.36x = 198,333,806.69
  5. Step 5: Solve for x
    x = 198,333,806.69/16,695.36
  6. Step 6: Final answer
    x = 11,879.58

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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.