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Finding the Fourth Proportional to 12,922.99, 17,832.39 and 7,258.35

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Solution

The fourth proportional to 12,922.99, 17,832.39 and 7,258.35 is: 10,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,922.99 : 17,832.39 = 7,258.35 : x
  2. Step 2: Convert to fraction form
    12,922.99/17,832.39 = 7,258.35/x
  3. Step 3: Cross multiply
    12,922.99x = 17,832.39 × 7,258.35
  4. Step 4: Simplify right side
    12,922.99x = 129,433,691.66
  5. Step 5: Solve for x
    x = 129,433,691.66/12,922.99
  6. Step 6: Final answer
    x = 10,015.77

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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.