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Finding the Fourth Proportional to 388,085.40, 580,961.70 and 230,232.60

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Solution

The fourth proportional to 388,085.40, 580,961.70 and 230,232.60 is: 344,656.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,085.40 : 580,961.70 = 230,232.60 : x
  2. Step 2: Convert to fraction form
    388,085.40/580,961.70 = 230,232.60/x
  3. Step 3: Cross multiply
    388,085.40x = 580,961.70 × 230,232.60
  4. Step 4: Simplify right side
    388,085.40x = 133,756,322,691.42
  5. Step 5: Solve for x
    x = 133,756,322,691.42/388,085.40
  6. Step 6: Final answer
    x = 344,656.93

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.