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Finding the Fourth Proportional to 13,231.17, 18,258.95 and 7,262.95

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Solution

The fourth proportional to 13,231.17, 18,258.95 and 7,262.95 is: 10,022.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.17 : 18,258.95 = 7,262.95 : x
  2. Step 2: Convert to fraction form
    13,231.17/18,258.95 = 7,262.95/x
  3. Step 3: Cross multiply
    13,231.17x = 18,258.95 × 7,262.95
  4. Step 4: Simplify right side
    13,231.17x = 132,613,840.90
  5. Step 5: Solve for x
    x = 132,613,840.90/13,231.17
  6. Step 6: Final answer
    x = 10,022.84

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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.