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Finding the Fourth Proportional to 590,721.80, 815,197.22 and 322,449.80

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Solution

The fourth proportional to 590,721.80, 815,197.22 and 322,449.80 is: 444,981.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,721.80 : 815,197.22 = 322,449.80 : x
  2. Step 2: Convert to fraction form
    590,721.80/815,197.22 = 322,449.80/x
  3. Step 3: Cross multiply
    590,721.80x = 815,197.22 × 322,449.80
  4. Step 4: Simplify right side
    590,721.80x = 262,860,180,549.56
  5. Step 5: Solve for x
    x = 262,860,180,549.56/590,721.80
  6. Step 6: Final answer
    x = 444,981.34

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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.