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Finding the Fourth Proportional to 13,935.19, 20,905.83 and 5,933.20

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Solution

The fourth proportional to 13,935.19, 20,905.83 and 5,933.20 is: 8,901.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.19 : 20,905.83 = 5,933.20 : x
  2. Step 2: Convert to fraction form
    13,935.19/20,905.83 = 5,933.20/x
  3. Step 3: Cross multiply
    13,935.19x = 20,905.83 × 5,933.20
  4. Step 4: Simplify right side
    13,935.19x = 124,038,470.56
  5. Step 5: Solve for x
    x = 124,038,470.56/13,935.19
  6. Step 6: Final answer
    x = 8,901.10

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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.