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Finding the Fourth Proportional to 282,611.72, 389,736.36 and 185,645

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Solution

The fourth proportional to 282,611.72, 389,736.36 and 185,645 is: 256,014.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,611.72 : 389,736.36 = 185,645 : x
  2. Step 2: Convert to fraction form
    282,611.72/389,736.36 = 185,645/x
  3. Step 3: Cross multiply
    282,611.72x = 389,736.36 × 185,645
  4. Step 4: Simplify right side
    282,611.72x = 72,352,606,552.20
  5. Step 5: Solve for x
    x = 72,352,606,552.20/282,611.72
  6. Step 6: Final answer
    x = 256,014.18

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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.