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Finding the Fourth Proportional to 352,617.20, 528,871.80 and 115,960.40

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Solution

The fourth proportional to 352,617.20, 528,871.80 and 115,960.40 is: 173,922.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,617.20 : 528,871.80 = 115,960.40 : x
  2. Step 2: Convert to fraction form
    352,617.20/528,871.80 = 115,960.40/x
  3. Step 3: Cross multiply
    352,617.20x = 528,871.80 × 115,960.40
  4. Step 4: Simplify right side
    352,617.20x = 61,328,185,476.72
  5. Step 5: Solve for x
    x = 61,328,185,476.72/352,617.20
  6. Step 6: Final answer
    x = 173,922.84

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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.