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Finding the Fourth Proportional to 331,356.60, 496,646.10 and 141,816.60

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Solution

The fourth proportional to 331,356.60, 496,646.10 and 141,816.60 is: 212,558.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,356.60 : 496,646.10 = 141,816.60 : x
  2. Step 2: Convert to fraction form
    331,356.60/496,646.10 = 141,816.60/x
  3. Step 3: Cross multiply
    331,356.60x = 496,646.10 × 141,816.60
  4. Step 4: Simplify right side
    331,356.60x = 70,432,661,305.26
  5. Step 5: Solve for x
    x = 70,432,661,305.26/331,356.60
  6. Step 6: Final answer
    x = 212,558.50

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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.