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Finding the Fourth Proportional to 515,634.75, 711,576.21 and 286,192.13

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Solution

The fourth proportional to 515,634.75, 711,576.21 and 286,192.13 is: 394,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,634.75 : 711,576.21 = 286,192.13 : x
  2. Step 2: Convert to fraction form
    515,634.75/711,576.21 = 286,192.13/x
  3. Step 3: Cross multiply
    515,634.75x = 711,576.21 × 286,192.13
  4. Step 4: Simplify right side
    515,634.75x = 203,647,507,639.35
  5. Step 5: Solve for x
    x = 203,647,507,639.35/515,634.75
  6. Step 6: Final answer
    x = 394,945.27

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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.