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Finding the Fourth Proportional to 104,118.52, 143,683.64 and 56,371.90

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Solution

The fourth proportional to 104,118.52, 143,683.64 and 56,371.90 is: 77,793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,118.52 : 143,683.64 = 56,371.90 : x
  2. Step 2: Convert to fraction form
    104,118.52/143,683.64 = 56,371.90/x
  3. Step 3: Cross multiply
    104,118.52x = 143,683.64 × 56,371.90
  4. Step 4: Simplify right side
    104,118.52x = 8,099,719,785.72
  5. Step 5: Solve for x
    x = 8,099,719,785.72/104,118.52
  6. Step 6: Final answer
    x = 77,793.27

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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.