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Finding the Fourth Proportional to 19,294.74, 28,943.23 and 7,448.57

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Solution

The fourth proportional to 19,294.74, 28,943.23 and 7,448.57 is: 11,173.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,294.74 : 28,943.23 = 7,448.57 : x
  2. Step 2: Convert to fraction form
    19,294.74/28,943.23 = 7,448.57/x
  3. Step 3: Cross multiply
    19,294.74x = 28,943.23 × 7,448.57
  4. Step 4: Simplify right side
    19,294.74x = 215,585,674.68
  5. Step 5: Solve for x
    x = 215,585,674.68/19,294.74
  6. Step 6: Final answer
    x = 11,173.29

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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.