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Finding the Fourth Proportional to 16,920.15, 25,380.23 and 7,056.15

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Solution

The fourth proportional to 16,920.15, 25,380.23 and 7,056.15 is: 10,584.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,920.15 : 25,380.23 = 7,056.15 : x
  2. Step 2: Convert to fraction form
    16,920.15/25,380.23 = 7,056.15/x
  3. Step 3: Cross multiply
    16,920.15x = 25,380.23 × 7,056.15
  4. Step 4: Simplify right side
    16,920.15x = 179,086,674.63
  5. Step 5: Solve for x
    x = 179,086,674.63/16,920.15
  6. Step 6: Final answer
    x = 10,584.23

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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.