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Finding the Fourth Proportional to 14,503.20, 21,738.60 and 8,266.20

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Solution

The fourth proportional to 14,503.20, 21,738.60 and 8,266.20 is: 12,390.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,503.20 : 21,738.60 = 8,266.20 : x
  2. Step 2: Convert to fraction form
    14,503.20/21,738.60 = 8,266.20/x
  3. Step 3: Cross multiply
    14,503.20x = 21,738.60 × 8,266.20
  4. Step 4: Simplify right side
    14,503.20x = 179,695,615.32
  5. Step 5: Solve for x
    x = 179,695,615.32/14,503.20
  6. Step 6: Final answer
    x = 12,390.07

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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.