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Finding the Fourth Proportional to 605,219.70, 907,829.55 and 447,755.70

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Solution

The fourth proportional to 605,219.70, 907,829.55 and 447,755.70 is: 671,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,219.70 : 907,829.55 = 447,755.70 : x
  2. Step 2: Convert to fraction form
    605,219.70/907,829.55 = 447,755.70/x
  3. Step 3: Cross multiply
    605,219.70x = 907,829.55 × 447,755.70
  4. Step 4: Simplify right side
    605,219.70x = 406,485,855,640.94
  5. Step 5: Solve for x
    x = 406,485,855,640.94/605,219.70
  6. Step 6: Final answer
    x = 671,633.55

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1.5x scale

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.