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Finding the Fourth Proportional to 14,791.82, 20,415.34 and 8,741.81

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Solution

The fourth proportional to 14,791.82, 20,415.34 and 8,741.81 is: 12,065.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,791.82 : 20,415.34 = 8,741.81 : x
  2. Step 2: Convert to fraction form
    14,791.82/20,415.34 = 8,741.81/x
  3. Step 3: Cross multiply
    14,791.82x = 20,415.34 × 8,741.81
  4. Step 4: Simplify right side
    14,791.82x = 178,466,970.49
  5. Step 5: Solve for x
    x = 178,466,970.49/14,791.82
  6. Step 6: Final answer
    x = 12,065.25

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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.