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Finding the Fourth Proportional to 19,066.97, 28,600.46 and 5,215.97

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Solution

The fourth proportional to 19,066.97, 28,600.46 and 5,215.97 is: 7,823.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,066.97 : 28,600.46 = 5,215.97 : x
  2. Step 2: Convert to fraction form
    19,066.97/28,600.46 = 5,215.97/x
  3. Step 3: Cross multiply
    19,066.97x = 28,600.46 × 5,215.97
  4. Step 4: Simplify right side
    19,066.97x = 149,178,972.26
  5. Step 5: Solve for x
    x = 149,178,972.26/19,066.97
  6. Step 6: Final answer
    x = 7,823.95

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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.