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Finding the Fourth Proportional to 605,416.06, 907,652.85 and 391,732.48

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Solution

The fourth proportional to 605,416.06, 907,652.85 and 391,732.48 is: 587,293.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,416.06 : 907,652.85 = 391,732.48 : x
  2. Step 2: Convert to fraction form
    605,416.06/907,652.85 = 391,732.48/x
  3. Step 3: Cross multiply
    605,416.06x = 907,652.85 × 391,732.48
  4. Step 4: Simplify right side
    605,416.06x = 355,557,101,909.57
  5. Step 5: Solve for x
    x = 355,557,101,909.57/605,416.06
  6. Step 6: Final answer
    x = 587,293.81

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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.