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Finding the Fourth Proportional to 13,809.52, 20,733.72 and 13,182.58

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Solution

The fourth proportional to 13,809.52, 20,733.72 and 13,182.58 is: 19,792.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.52 : 20,733.72 = 13,182.58 : x
  2. Step 2: Convert to fraction form
    13,809.52/20,733.72 = 13,182.58/x
  3. Step 3: Cross multiply
    13,809.52x = 20,733.72 × 13,182.58
  4. Step 4: Simplify right side
    13,809.52x = 273,323,922.60
  5. Step 5: Solve for x
    x = 273,323,922.60/13,809.52
  6. Step 6: Final answer
    x = 19,792.43

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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.