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Finding the Fourth Proportional to 19,394.81, 29,034.80 and 11,975.41

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Solution

The fourth proportional to 19,394.81, 29,034.80 and 11,975.41 is: 17,927.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,394.81 : 29,034.80 = 11,975.41 : x
  2. Step 2: Convert to fraction form
    19,394.81/29,034.80 = 11,975.41/x
  3. Step 3: Cross multiply
    19,394.81x = 29,034.80 × 11,975.41
  4. Step 4: Simplify right side
    19,394.81x = 347,703,634.27
  5. Step 5: Solve for x
    x = 347,703,634.27/19,394.81
  6. Step 6: Final answer
    x = 17,927.66

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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.