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Finding the Fourth Proportional to 92,872.35, 139,279.35 and 39,563.77

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Solution

The fourth proportional to 92,872.35, 139,279.35 and 39,563.77 is: 59,333.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,872.35 : 139,279.35 = 39,563.77 : x
  2. Step 2: Convert to fraction form
    92,872.35/139,279.35 = 39,563.77/x
  3. Step 3: Cross multiply
    92,872.35x = 139,279.35 × 39,563.77
  4. Step 4: Simplify right side
    92,872.35x = 5,510,415,616.19
  5. Step 5: Solve for x
    x = 5,510,415,616.19/92,872.35
  6. Step 6: Final answer
    x = 59,333.22

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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.