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Finding the Fourth Proportional to 212,409.91, 318,614.46 and 62,755.32

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Solution

The fourth proportional to 212,409.91, 318,614.46 and 62,755.32 is: 94,132.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,409.91 : 318,614.46 = 62,755.32 : x
  2. Step 2: Convert to fraction form
    212,409.91/318,614.46 = 62,755.32/x
  3. Step 3: Cross multiply
    212,409.91x = 318,614.46 × 62,755.32
  4. Step 4: Simplify right side
    212,409.91x = 19,994,752,393.93
  5. Step 5: Solve for x
    x = 19,994,752,393.93/212,409.91
  6. Step 6: Final answer
    x = 94,132.86

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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.