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Finding the Fourth Proportional to 19,699.43, 27,185.90 and 10,747.43

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Solution

The fourth proportional to 19,699.43, 27,185.90 and 10,747.43 is: 14,831.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.43 : 27,185.90 = 10,747.43 : x
  2. Step 2: Convert to fraction form
    19,699.43/27,185.90 = 10,747.43/x
  3. Step 3: Cross multiply
    19,699.43x = 27,185.90 × 10,747.43
  4. Step 4: Simplify right side
    19,699.43x = 292,178,557.24
  5. Step 5: Solve for x
    x = 292,178,557.24/19,699.43
  6. Step 6: Final answer
    x = 14,831.83

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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.