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Finding the Fourth Proportional to 515,251.12, 711,057.93 and 285,800.92

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Solution

The fourth proportional to 515,251.12, 711,057.93 and 285,800.92 is: 394,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,251.12 : 711,057.93 = 285,800.92 : x
  2. Step 2: Convert to fraction form
    515,251.12/711,057.93 = 285,800.92/x
  3. Step 3: Cross multiply
    515,251.12x = 711,057.93 × 285,800.92
  4. Step 4: Simplify right side
    515,251.12x = 203,221,010,567.30
  5. Step 5: Solve for x
    x = 203,221,010,567.30/515,251.12
  6. Step 6: Final answer
    x = 394,411.58

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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.