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Finding the Fourth Proportional to 439,153.44, 605,697.30 and 378,003.66

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Solution

The fourth proportional to 439,153.44, 605,697.30 and 378,003.66 is: 521,357.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,153.44 : 605,697.30 = 378,003.66 : x
  2. Step 2: Convert to fraction form
    439,153.44/605,697.30 = 378,003.66/x
  3. Step 3: Cross multiply
    439,153.44x = 605,697.30 × 378,003.66
  4. Step 4: Simplify right side
    439,153.44x = 228,955,796,252.12
  5. Step 5: Solve for x
    x = 228,955,796,252.12/439,153.44
  6. Step 6: Final answer
    x = 521,357.17

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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.