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Finding the Fourth Proportional to 13,793.94, 18,987.60 and 12,022.50

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Solution

The fourth proportional to 13,793.94, 18,987.60 and 12,022.50 is: 16,549.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,793.94 : 18,987.60 = 12,022.50 : x
  2. Step 2: Convert to fraction form
    13,793.94/18,987.60 = 12,022.50/x
  3. Step 3: Cross multiply
    13,793.94x = 18,987.60 × 12,022.50
  4. Step 4: Simplify right side
    13,793.94x = 228,278,421.00
  5. Step 5: Solve for x
    x = 228,278,421.00/13,793.94
  6. Step 6: Final answer
    x = 16,549.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.