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Finding the Fourth Proportional to 352,928.74, 529,349.34 and 208,920.25

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Solution

The fourth proportional to 352,928.74, 529,349.34 and 208,920.25 is: 313,354.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,928.74 : 529,349.34 = 208,920.25 : x
  2. Step 2: Convert to fraction form
    352,928.74/529,349.34 = 208,920.25/x
  3. Step 3: Cross multiply
    352,928.74x = 529,349.34 × 208,920.25
  4. Step 4: Simplify right side
    352,928.74x = 110,591,796,450.14
  5. Step 5: Solve for x
    x = 110,591,796,450.14/352,928.74
  6. Step 6: Final answer
    x = 313,354.46

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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.