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Finding the Fourth Proportional to 18,773.76, 28,168.86 and 14,607.54

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Solution

The fourth proportional to 18,773.76, 28,168.86 and 14,607.54 is: 21,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.76 : 28,168.86 = 14,607.54 : x
  2. Step 2: Convert to fraction form
    18,773.76/28,168.86 = 14,607.54/x
  3. Step 3: Cross multiply
    18,773.76x = 28,168.86 × 14,607.54
  4. Step 4: Simplify right side
    18,773.76x = 411,477,749.20
  5. Step 5: Solve for x
    x = 411,477,749.20/18,773.76
  6. Step 6: Final answer
    x = 21,917.71

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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.