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Finding the Fourth Proportional to 620,179.07, 928,912.30 and 439,717.48

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Solution

The fourth proportional to 620,179.07, 928,912.30 and 439,717.48 is: 658,614.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,179.07 : 928,912.30 = 439,717.48 : x
  2. Step 2: Convert to fraction form
    620,179.07/928,912.30 = 439,717.48/x
  3. Step 3: Cross multiply
    620,179.07x = 928,912.30 × 439,717.48
  4. Step 4: Simplify right side
    620,179.07x = 408,458,975,697.00
  5. Step 5: Solve for x
    x = 408,458,975,697.00/620,179.07
  6. Step 6: Final answer
    x = 658,614.58

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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.