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Finding the Fourth Proportional to 640,190.00, 883,480.03 and 353,728.55

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Solution

The fourth proportional to 640,190.00, 883,480.03 and 353,728.55 is: 488,155.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,190.00 : 883,480.03 = 353,728.55 : x
  2. Step 2: Convert to fraction form
    640,190.00/883,480.03 = 353,728.55/x
  3. Step 3: Cross multiply
    640,190.00x = 883,480.03 × 353,728.55
  4. Step 4: Simplify right side
    640,190.00x = 312,512,111,290.24
  5. Step 5: Solve for x
    x = 312,512,111,290.24/640,190.00
  6. Step 6: Final answer
    x = 488,155.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.