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Finding the Fourth Proportional to 409,669.20, 613,927.80 and 325,573.20

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Solution

The fourth proportional to 409,669.20, 613,927.80 and 325,573.20 is: 487,902.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,669.20 : 613,927.80 = 325,573.20 : x
  2. Step 2: Convert to fraction form
    409,669.20/613,927.80 = 325,573.20/x
  3. Step 3: Cross multiply
    409,669.20x = 613,927.80 × 325,573.20
  4. Step 4: Simplify right side
    409,669.20x = 199,878,438,414.96
  5. Step 5: Solve for x
    x = 199,878,438,414.96/409,669.20
  6. Step 6: Final answer
    x = 487,902.04

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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.