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Finding the Fourth Proportional to 655,939.89, 904,887.75 and 383,840.89

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Solution

The fourth proportional to 655,939.89, 904,887.75 and 383,840.89 is: 529,519.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,939.89 : 904,887.75 = 383,840.89 : x
  2. Step 2: Convert to fraction form
    655,939.89/904,887.75 = 383,840.89/x
  3. Step 3: Cross multiply
    655,939.89x = 904,887.75 × 383,840.89
  4. Step 4: Simplify right side
    655,939.89x = 347,332,923,577.28
  5. Step 5: Solve for x
    x = 347,332,923,577.28/655,939.89
  6. Step 6: Final answer
    x = 529,519.44

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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.