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Finding the Fourth Proportional to 737,524.80, 1,105,509.60 and 421,300.80

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Solution

The fourth proportional to 737,524.80, 1,105,509.60 and 421,300.80 is: 631,507.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,524.80 : 1,105,509.60 = 421,300.80 : x
  2. Step 2: Convert to fraction form
    737,524.80/1,105,509.60 = 421,300.80/x
  3. Step 3: Cross multiply
    737,524.80x = 1,105,509.60 × 421,300.80
  4. Step 4: Simplify right side
    737,524.80x = 465,752,078,887.68
  5. Step 5: Solve for x
    x = 465,752,078,887.68/737,524.80
  6. Step 6: Final answer
    x = 631,507.01

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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.