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Finding the Fourth Proportional to 605,354.72, 835,470.27 and 391,118.23

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Solution

The fourth proportional to 605,354.72, 835,470.27 and 391,118.23 is: 539,795.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,354.72 : 835,470.27 = 391,118.23 : x
  2. Step 2: Convert to fraction form
    605,354.72/835,470.27 = 391,118.23/x
  3. Step 3: Cross multiply
    605,354.72x = 835,470.27 × 391,118.23
  4. Step 4: Simplify right side
    605,354.72x = 326,767,647,087.08
  5. Step 5: Solve for x
    x = 326,767,647,087.08/605,354.72
  6. Step 6: Final answer
    x = 539,795.32

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.