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Finding the Fourth Proportional to 281,861.37, 388,986.71 and 186,200.37

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Solution

The fourth proportional to 281,861.37, 388,986.71 and 186,200.37 is: 256,968.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,861.37 : 388,986.71 = 186,200.37 : x
  2. Step 2: Convert to fraction form
    281,861.37/388,986.71 = 186,200.37/x
  3. Step 3: Cross multiply
    281,861.37x = 388,986.71 × 186,200.37
  4. Step 4: Simplify right side
    281,861.37x = 72,429,468,396.08
  5. Step 5: Solve for x
    x = 72,429,468,396.08/281,861.37
  6. Step 6: Final answer
    x = 256,968.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.