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Finding the Fourth Proportional to 12,358.64, 18,538.98 and 3,593.54

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Solution

The fourth proportional to 12,358.64, 18,538.98 and 3,593.54 is: 5,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358.64 : 18,538.98 = 3,593.54 : x
  2. Step 2: Convert to fraction form
    12,358.64/18,538.98 = 3,593.54/x
  3. Step 3: Cross multiply
    12,358.64x = 18,538.98 × 3,593.54
  4. Step 4: Simplify right side
    12,358.64x = 66,620,566.19
  5. Step 5: Solve for x
    x = 66,620,566.19/12,358.64
  6. Step 6: Final answer
    x = 5,390.61

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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.