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Finding the Fourth Proportional to 12,003.32, 18,039 and 7,073.66

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Solution

The fourth proportional to 12,003.32, 18,039 and 7,073.66 is: 10,630.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,003.32 : 18,039 = 7,073.66 : x
  2. Step 2: Convert to fraction form
    12,003.32/18,039 = 7,073.66/x
  3. Step 3: Cross multiply
    12,003.32x = 18,039 × 7,073.66
  4. Step 4: Simplify right side
    12,003.32x = 127,601,752.74
  5. Step 5: Solve for x
    x = 127,601,752.74/12,003.32
  6. Step 6: Final answer
    x = 10,630.54

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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.