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Finding the Fourth Proportional to 13,840.68, 20,748.68 and 5,073.55

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Solution

The fourth proportional to 13,840.68, 20,748.68 and 5,073.55 is: 7,605.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.68 : 20,748.68 = 5,073.55 : x
  2. Step 2: Convert to fraction form
    13,840.68/20,748.68 = 5,073.55/x
  3. Step 3: Cross multiply
    13,840.68x = 20,748.68 × 5,073.55
  4. Step 4: Simplify right side
    13,840.68x = 105,269,388.17
  5. Step 5: Solve for x
    x = 105,269,388.17/13,840.68
  6. Step 6: Final answer
    x = 7,605.80

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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.