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Finding the Fourth Proportional to 13,927.76, 20,893.64 and 4,065.76

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Solution

The fourth proportional to 13,927.76, 20,893.64 and 4,065.76 is: 6,099.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,927.76 : 20,893.64 = 4,065.76 : x
  2. Step 2: Convert to fraction form
    13,927.76/20,893.64 = 4,065.76/x
  3. Step 3: Cross multiply
    13,927.76x = 20,893.64 × 4,065.76
  4. Step 4: Simplify right side
    13,927.76x = 84,948,525.77
  5. Step 5: Solve for x
    x = 84,948,525.77/13,927.76
  6. Step 6: Final answer
    x = 6,099.22

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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.