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Finding the Fourth Proportional to 19,193.74, 28,784.17 and 7,344.75

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Solution

The fourth proportional to 19,193.74, 28,784.17 and 7,344.75 is: 11,014.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,193.74 : 28,784.17 = 7,344.75 : x
  2. Step 2: Convert to fraction form
    19,193.74/28,784.17 = 7,344.75/x
  3. Step 3: Cross multiply
    19,193.74x = 28,784.17 × 7,344.75
  4. Step 4: Simplify right side
    19,193.74x = 211,412,532.61
  5. Step 5: Solve for x
    x = 211,412,532.61/19,193.74
  6. Step 6: Final answer
    x = 11,014.66

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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.