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Finding the Fourth Proportional to 19,955.86, 29,936.87 and 6,805.16

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Solution

The fourth proportional to 19,955.86, 29,936.87 and 6,805.16 is: 10,208.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,955.86 : 29,936.87 = 6,805.16 : x
  2. Step 2: Convert to fraction form
    19,955.86/29,936.87 = 6,805.16/x
  3. Step 3: Cross multiply
    19,955.86x = 29,936.87 × 6,805.16
  4. Step 4: Simplify right side
    19,955.86x = 203,725,224.70
  5. Step 5: Solve for x
    x = 203,725,224.70/19,955.86
  6. Step 6: Final answer
    x = 10,208.79

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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.