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Finding the Fourth Proportional to 517,219.63, 713,766.63 and 287,786.62

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Solution

The fourth proportional to 517,219.63, 713,766.63 and 287,786.62 is: 397,147.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,219.63 : 713,766.63 = 287,786.62 : x
  2. Step 2: Convert to fraction form
    517,219.63/713,766.63 = 287,786.62/x
  3. Step 3: Cross multiply
    517,219.63x = 713,766.63 × 287,786.62
  4. Step 4: Simplify right side
    517,219.63x = 205,412,487,887.90
  5. Step 5: Solve for x
    x = 205,412,487,887.90/517,219.63
  6. Step 6: Final answer
    x = 397,147.51

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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.