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Finding the Fourth Proportional to 13,925.59, 20,906.19 and 11,963.77

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Solution

The fourth proportional to 13,925.59, 20,906.19 and 11,963.77 is: 17,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.59 : 20,906.19 = 11,963.77 : x
  2. Step 2: Convert to fraction form
    13,925.59/20,906.19 = 11,963.77/x
  3. Step 3: Cross multiply
    13,925.59x = 20,906.19 × 11,963.77
  4. Step 4: Simplify right side
    13,925.59x = 250,116,714.30
  5. Step 5: Solve for x
    x = 250,116,714.30/13,925.59
  6. Step 6: Final answer
    x = 17,960.95

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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.