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Finding the Fourth Proportional to 17,107.56, 25,663.80 and 5,416.80

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Solution

The fourth proportional to 17,107.56, 25,663.80 and 5,416.80 is: 8,125.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,107.56 : 25,663.80 = 5,416.80 : x
  2. Step 2: Convert to fraction form
    17,107.56/25,663.80 = 5,416.80/x
  3. Step 3: Cross multiply
    17,107.56x = 25,663.80 × 5,416.80
  4. Step 4: Simplify right side
    17,107.56x = 139,015,671.84
  5. Step 5: Solve for x
    x = 139,015,671.84/17,107.56
  6. Step 6: Final answer
    x = 8,125.98

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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.