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Finding the Fourth Proportional to 22,393.64, 30,903.72 and 12,322.61

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Solution

The fourth proportional to 22,393.64, 30,903.72 and 12,322.61 is: 17,005.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,393.64 : 30,903.72 = 12,322.61 : x
  2. Step 2: Convert to fraction form
    22,393.64/30,903.72 = 12,322.61/x
  3. Step 3: Cross multiply
    22,393.64x = 30,903.72 × 12,322.61
  4. Step 4: Simplify right side
    22,393.64x = 380,814,489.11
  5. Step 5: Solve for x
    x = 380,814,489.11/22,393.64
  6. Step 6: Final answer
    x = 17,005.48

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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.