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Finding the Fourth Proportional to 13,058.58, 18,023.97 and 7,472.82

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Solution

The fourth proportional to 13,058.58, 18,023.97 and 7,472.82 is: 10,314.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.58 : 18,023.97 = 7,472.82 : x
  2. Step 2: Convert to fraction form
    13,058.58/18,023.97 = 7,472.82/x
  3. Step 3: Cross multiply
    13,058.58x = 18,023.97 × 7,472.82
  4. Step 4: Simplify right side
    13,058.58x = 134,689,883.50
  5. Step 5: Solve for x
    x = 134,689,883.50/13,058.58
  6. Step 6: Final answer
    x = 10,314.28

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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.