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Finding the Fourth Proportional to 352,548.16, 528,821.34 and 127,908.16

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Solution

The fourth proportional to 352,548.16, 528,821.34 and 127,908.16 is: 191,861.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,548.16 : 528,821.34 = 127,908.16 : x
  2. Step 2: Convert to fraction form
    352,548.16/528,821.34 = 127,908.16/x
  3. Step 3: Cross multiply
    352,548.16x = 528,821.34 × 127,908.16
  4. Step 4: Simplify right side
    352,548.16x = 67,640,564,568.13
  5. Step 5: Solve for x
    x = 67,640,564,568.13/352,548.16
  6. Step 6: Final answer
    x = 191,861.91

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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.