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Finding the Fourth Proportional to 621,093.61, 931,640.63 and 194,662.53

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Solution

The fourth proportional to 621,093.61, 931,640.63 and 194,662.53 is: 291,993.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,093.61 : 931,640.63 = 194,662.53 : x
  2. Step 2: Convert to fraction form
    621,093.61/931,640.63 = 194,662.53/x
  3. Step 3: Cross multiply
    621,093.61x = 931,640.63 × 194,662.53
  4. Step 4: Simplify right side
    621,093.61x = 181,355,522,086.59
  5. Step 5: Solve for x
    x = 181,355,522,086.59/621,093.61
  6. Step 6: Final answer
    x = 291,993.86

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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.