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Finding the Fourth Proportional to 352,563.84, 528,911.37 and 115,915.86

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Solution

The fourth proportional to 352,563.84, 528,911.37 and 115,915.86 is: 173,895.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,563.84 : 528,911.37 = 115,915.86 : x
  2. Step 2: Convert to fraction form
    352,563.84/528,911.37 = 115,915.86/x
  3. Step 3: Cross multiply
    352,563.84x = 528,911.37 × 115,915.86
  4. Step 4: Simplify right side
    352,563.84x = 61,309,216,317.33
  5. Step 5: Solve for x
    x = 61,309,216,317.33/352,563.84
  6. Step 6: Final answer
    x = 173,895.36

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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.