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Finding the Fourth Proportional to 606,628.70, 909,943.05 and 394,052.30

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Solution

The fourth proportional to 606,628.70, 909,943.05 and 394,052.30 is: 591,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,628.70 : 909,943.05 = 394,052.30 : x
  2. Step 2: Convert to fraction form
    606,628.70/909,943.05 = 394,052.30/x
  3. Step 3: Cross multiply
    606,628.70x = 909,943.05 × 394,052.30
  4. Step 4: Simplify right side
    606,628.70x = 358,565,151,721.52
  5. Step 5: Solve for x
    x = 358,565,151,721.52/606,628.70
  6. Step 6: Final answer
    x = 591,078.45

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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.