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Finding the Fourth Proportional to 352,061.80, 528,092.70 and 211,748.20

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Solution

The fourth proportional to 352,061.80, 528,092.70 and 211,748.20 is: 317,622.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,061.80 : 528,092.70 = 211,748.20 : x
  2. Step 2: Convert to fraction form
    352,061.80/528,092.70 = 211,748.20/x
  3. Step 3: Cross multiply
    352,061.80x = 528,092.70 × 211,748.20
  4. Step 4: Simplify right side
    352,061.80x = 111,822,678,658.14
  5. Step 5: Solve for x
    x = 111,822,678,658.14/352,061.80
  6. Step 6: Final answer
    x = 317,622.30

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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.