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Finding the Fourth Proportional to 281,861.62, 388,987.05 and 186,200.62

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Solution

The fourth proportional to 281,861.62, 388,987.05 and 186,200.62 is: 256,968.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,861.62 : 388,987.05 = 186,200.62 : x
  2. Step 2: Convert to fraction form
    281,861.62/388,987.05 = 186,200.62/x
  3. Step 3: Cross multiply
    281,861.62x = 388,987.05 × 186,200.62
  4. Step 4: Simplify right side
    281,861.62x = 72,429,629,881.97
  5. Step 5: Solve for x
    x = 72,429,629,881.97/281,861.62
  6. Step 6: Final answer
    x = 256,968.76

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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.