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Finding the Fourth Proportional to 515,250.87, 711,057.59 and 285,800.67

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Solution

The fourth proportional to 515,250.87, 711,057.59 and 285,800.67 is: 394,411.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,250.87 : 711,057.59 = 285,800.67 : x
  2. Step 2: Convert to fraction form
    515,250.87/711,057.59 = 285,800.67/x
  3. Step 3: Cross multiply
    515,250.87x = 711,057.59 × 285,800.67
  4. Step 4: Simplify right side
    515,250.87x = 203,220,734,201.58
  5. Step 5: Solve for x
    x = 203,220,734,201.58/515,250.87
  6. Step 6: Final answer
    x = 394,411.24

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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.