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Finding the Fourth Proportional to 19,208.94, 28,813.12 and 11,714.70

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Solution

The fourth proportional to 19,208.94, 28,813.12 and 11,714.70 is: 17,571.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,208.94 : 28,813.12 = 11,714.70 : x
  2. Step 2: Convert to fraction form
    19,208.94/28,813.12 = 11,714.70/x
  3. Step 3: Cross multiply
    19,208.94x = 28,813.12 × 11,714.70
  4. Step 4: Simplify right side
    19,208.94x = 337,537,056.86
  5. Step 5: Solve for x
    x = 337,537,056.86/19,208.94
  6. Step 6: Final answer
    x = 17,571.87

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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.