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Finding the Fourth Proportional to 13,060.78, 18,023.91 and 7,092.48

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Solution

The fourth proportional to 13,060.78, 18,023.91 and 7,092.48 is: 9,787.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,060.78 : 18,023.91 = 7,092.48 : x
  2. Step 2: Convert to fraction form
    13,060.78/18,023.91 = 7,092.48/x
  3. Step 3: Cross multiply
    13,060.78x = 18,023.91 × 7,092.48
  4. Step 4: Simplify right side
    13,060.78x = 127,834,221.20
  5. Step 5: Solve for x
    x = 127,834,221.20/13,060.78
  6. Step 6: Final answer
    x = 9,787.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.