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Finding the Fourth Proportional to 666,185, 919,349.88 and 364,379

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Solution

The fourth proportional to 666,185, 919,349.88 and 364,379 is: 502,850.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,185 : 919,349.88 = 364,379 : x
  2. Step 2: Convert to fraction form
    666,185/919,349.88 = 364,379/x
  3. Step 3: Cross multiply
    666,185x = 919,349.88 × 364,379
  4. Step 4: Simplify right side
    666,185x = 334,991,789,924.52
  5. Step 5: Solve for x
    x = 334,991,789,924.52/666,185
  6. Step 6: Final answer
    x = 502,850.99

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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.