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Finding the Fourth Proportional to 20,963.24, 31,448.74 and 6,924.24

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Solution

The fourth proportional to 20,963.24, 31,448.74 and 6,924.24 is: 10,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.24 : 31,448.74 = 6,924.24 : x
  2. Step 2: Convert to fraction form
    20,963.24/31,448.74 = 6,924.24/x
  3. Step 3: Cross multiply
    20,963.24x = 31,448.74 × 6,924.24
  4. Step 4: Simplify right side
    20,963.24x = 217,758,623.46
  5. Step 5: Solve for x
    x = 217,758,623.46/20,963.24
  6. Step 6: Final answer
    x = 10,387.64

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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.