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Finding the Fourth Proportional to 282,448.53, 389,798.06 and 155,125.44

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Solution

The fourth proportional to 282,448.53, 389,798.06 and 155,125.44 is: 214,083.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,448.53 : 389,798.06 = 155,125.44 : x
  2. Step 2: Convert to fraction form
    282,448.53/389,798.06 = 155,125.44/x
  3. Step 3: Cross multiply
    282,448.53x = 389,798.06 × 155,125.44
  4. Step 4: Simplify right side
    282,448.53x = 60,467,594,793.02
  5. Step 5: Solve for x
    x = 60,467,594,793.02/282,448.53
  6. Step 6: Final answer
    x = 214,083.59

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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.