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Finding the Fourth Proportional to 352,608.40, 528,961.20 and 127,914.40

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Solution

The fourth proportional to 352,608.40, 528,961.20 and 127,914.40 is: 191,889.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,608.40 : 528,961.20 = 127,914.40 : x
  2. Step 2: Convert to fraction form
    352,608.40/528,961.20 = 127,914.40/x
  3. Step 3: Cross multiply
    352,608.40x = 528,961.20 × 127,914.40
  4. Step 4: Simplify right side
    352,608.40x = 67,661,754,521.28
  5. Step 5: Solve for x
    x = 67,661,754,521.28/352,608.40
  6. Step 6: Final answer
    x = 191,889.23

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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.