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Finding the Fourth Proportional to 94,787.40, 142,181.10 and 48,131.40

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Solution

The fourth proportional to 94,787.40, 142,181.10 and 48,131.40 is: 72,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,787.40 : 142,181.10 = 48,131.40 : x
  2. Step 2: Convert to fraction form
    94,787.40/142,181.10 = 48,131.40/x
  3. Step 3: Cross multiply
    94,787.40x = 142,181.10 × 48,131.40
  4. Step 4: Simplify right side
    94,787.40x = 6,843,375,396.54
  5. Step 5: Solve for x
    x = 6,843,375,396.54/94,787.40
  6. Step 6: Final answer
    x = 72,197.10

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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.