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Finding the Fourth Proportional to 14,809.20, 22,170.60 and 13,081.20

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Solution

The fourth proportional to 14,809.20, 22,170.60 and 13,081.20 is: 19,583.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,809.20 : 22,170.60 = 13,081.20 : x
  2. Step 2: Convert to fraction form
    14,809.20/22,170.60 = 13,081.20/x
  3. Step 3: Cross multiply
    14,809.20x = 22,170.60 × 13,081.20
  4. Step 4: Simplify right side
    14,809.20x = 290,018,052.72
  5. Step 5: Solve for x
    x = 290,018,052.72/14,809.20
  6. Step 6: Final answer
    x = 19,583.64

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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.