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Finding the Fourth Proportional to 365,843.70, 548,109.45 and 313,355.70

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Solution

The fourth proportional to 365,843.70, 548,109.45 and 313,355.70 is: 469,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,843.70 : 548,109.45 = 313,355.70 : x
  2. Step 2: Convert to fraction form
    365,843.70/548,109.45 = 313,355.70/x
  3. Step 3: Cross multiply
    365,843.70x = 548,109.45 × 313,355.70
  4. Step 4: Simplify right side
    365,843.70x = 171,753,220,381.37
  5. Step 5: Solve for x
    x = 171,753,220,381.37/365,843.70
  6. Step 6: Final answer
    x = 469,471.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.