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Finding the Fourth Proportional to 18,298.44, 27,484.40 and 10,917.32

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Solution

The fourth proportional to 18,298.44, 27,484.40 and 10,917.32 is: 16,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,298.44 : 27,484.40 = 10,917.32 : x
  2. Step 2: Convert to fraction form
    18,298.44/27,484.40 = 10,917.32/x
  3. Step 3: Cross multiply
    18,298.44x = 27,484.40 × 10,917.32
  4. Step 4: Simplify right side
    18,298.44x = 300,055,989.81
  5. Step 5: Solve for x
    x = 300,055,989.81/18,298.44
  6. Step 6: Final answer
    x = 16,397.90

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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.