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Finding the Fourth Proportional to 352,673.84, 528,648.82 and 139,355.37

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Solution

The fourth proportional to 352,673.84, 528,648.82 and 139,355.37 is: 208,890.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,673.84 : 528,648.82 = 139,355.37 : x
  2. Step 2: Convert to fraction form
    352,673.84/528,648.82 = 139,355.37/x
  3. Step 3: Cross multiply
    352,673.84x = 528,648.82 × 139,355.37
  4. Step 4: Simplify right side
    352,673.84x = 73,670,051,562.78
  5. Step 5: Solve for x
    x = 73,670,051,562.78/352,673.84
  6. Step 6: Final answer
    x = 208,890.04

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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.