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Finding the Fourth Proportional to 19,058.49, 28,575.89 and 7,951.57

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Solution

The fourth proportional to 19,058.49, 28,575.89 and 7,951.57 is: 11,922.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,058.49 : 28,575.89 = 7,951.57 : x
  2. Step 2: Convert to fraction form
    19,058.49/28,575.89 = 7,951.57/x
  3. Step 3: Cross multiply
    19,058.49x = 28,575.89 × 7,951.57
  4. Step 4: Simplify right side
    19,058.49x = 227,223,108.27
  5. Step 5: Solve for x
    x = 227,223,108.27/19,058.49
  6. Step 6: Final answer
    x = 11,922.41

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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.