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Finding the Fourth Proportional to 18,962.60, 26,169.63 and 13,928.99

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Solution

The fourth proportional to 18,962.60, 26,169.63 and 13,928.99 is: 19,222.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.60 : 26,169.63 = 13,928.99 : x
  2. Step 2: Convert to fraction form
    18,962.60/26,169.63 = 13,928.99/x
  3. Step 3: Cross multiply
    18,962.60x = 26,169.63 × 13,928.99
  4. Step 4: Simplify right side
    18,962.60x = 364,516,514.57
  5. Step 5: Solve for x
    x = 364,516,514.57/18,962.60
  6. Step 6: Final answer
    x = 19,222.92

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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.