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Finding the Fourth Proportional to 30,787.98, 46,181.30 and 8,600.87

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Solution

The fourth proportional to 30,787.98, 46,181.30 and 8,600.87 is: 12,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,787.98 : 46,181.30 = 8,600.87 : x
  2. Step 2: Convert to fraction form
    30,787.98/46,181.30 = 8,600.87/x
  3. Step 3: Cross multiply
    30,787.98x = 46,181.30 × 8,600.87
  4. Step 4: Simplify right side
    30,787.98x = 397,199,083.82
  5. Step 5: Solve for x
    x = 397,199,083.82/30,787.98
  6. Step 6: Final answer
    x = 12,901.11

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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.