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Finding the Fourth Proportional to 104,408.55, 144,083.90 and 56,661.90

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Solution

The fourth proportional to 104,408.55, 144,083.90 and 56,661.90 is: 78,193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,408.55 : 144,083.90 = 56,661.90 : x
  2. Step 2: Convert to fraction form
    104,408.55/144,083.90 = 56,661.90/x
  3. Step 3: Cross multiply
    104,408.55x = 144,083.90 × 56,661.90
  4. Step 4: Simplify right side
    104,408.55x = 8,164,067,533.41
  5. Step 5: Solve for x
    x = 8,164,067,533.41/104,408.55
  6. Step 6: Final answer
    x = 78,193.48

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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.