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Finding the Fourth Proportional to 619,122.37, 928,683.76 and 408,711.10

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Solution

The fourth proportional to 619,122.37, 928,683.76 and 408,711.10 is: 613,066.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,122.37 : 928,683.76 = 408,711.10 : x
  2. Step 2: Convert to fraction form
    619,122.37/928,683.76 = 408,711.10/x
  3. Step 3: Cross multiply
    619,122.37x = 928,683.76 × 408,711.10
  4. Step 4: Simplify right side
    619,122.37x = 379,563,361,101.74
  5. Step 5: Solve for x
    x = 379,563,361,101.74/619,122.37
  6. Step 6: Final answer
    x = 613,066.79

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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.