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Finding the Fourth Proportional to 352,709.70, 529,064.55 and 186,821.70

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Solution

The fourth proportional to 352,709.70, 529,064.55 and 186,821.70 is: 280,232.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,709.70 : 529,064.55 = 186,821.70 : x
  2. Step 2: Convert to fraction form
    352,709.70/529,064.55 = 186,821.70/x
  3. Step 3: Cross multiply
    352,709.70x = 529,064.55 × 186,821.70
  4. Step 4: Simplify right side
    352,709.70x = 98,840,738,640.74
  5. Step 5: Solve for x
    x = 98,840,738,640.74/352,709.70
  6. Step 6: Final answer
    x = 280,232.55

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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.