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Finding the Fourth Proportional to 212,407.91, 318,611.46 and 62,753.32

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Solution

The fourth proportional to 212,407.91, 318,611.46 and 62,753.32 is: 94,129.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,407.91 : 318,611.46 = 62,753.32 : x
  2. Step 2: Convert to fraction form
    212,407.91/318,611.46 = 62,753.32/x
  3. Step 3: Cross multiply
    212,407.91x = 318,611.46 × 62,753.32
  4. Step 4: Simplify right side
    212,407.91x = 19,993,926,905.05
  5. Step 5: Solve for x
    x = 19,993,926,905.05/212,407.91
  6. Step 6: Final answer
    x = 94,129.86

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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.