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Finding the Fourth Proportional to 92,599.50, 139,083.77 and 87,377.13

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Solution

The fourth proportional to 92,599.50, 139,083.77 and 87,377.13 is: 131,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,599.50 : 139,083.77 = 87,377.13 : x
  2. Step 2: Convert to fraction form
    92,599.50/139,083.77 = 87,377.13/x
  3. Step 3: Cross multiply
    92,599.50x = 139,083.77 × 87,377.13
  4. Step 4: Simplify right side
    92,599.50x = 12,152,740,215.29
  5. Step 5: Solve for x
    x = 12,152,740,215.29/92,599.50
  6. Step 6: Final answer
    x = 131,239.80

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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.