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Finding the Fourth Proportional to 136,626.84, 204,979.86 and 56,649.96

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Solution

The fourth proportional to 136,626.84, 204,979.86 and 56,649.96 is: 84,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,626.84 : 204,979.86 = 56,649.96 : x
  2. Step 2: Convert to fraction form
    136,626.84/204,979.86 = 56,649.96/x
  3. Step 3: Cross multiply
    136,626.84x = 204,979.86 × 56,649.96
  4. Step 4: Simplify right side
    136,626.84x = 11,612,100,869.81
  5. Step 5: Solve for x
    x = 11,612,100,869.81/136,626.84
  6. Step 6: Final answer
    x = 84,991.36

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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.