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Finding the Fourth Proportional to 611,186.00, 843,490.06 and 356,619.20

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Solution

The fourth proportional to 611,186.00, 843,490.06 and 356,619.20 is: 492,165.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,186.00 : 843,490.06 = 356,619.20 : x
  2. Step 2: Convert to fraction form
    611,186.00/843,490.06 = 356,619.20/x
  3. Step 3: Cross multiply
    611,186.00x = 843,490.06 × 356,619.20
  4. Step 4: Simplify right side
    611,186.00x = 300,804,751,622.33
  5. Step 5: Solve for x
    x = 300,804,751,622.33/611,186.00
  6. Step 6: Final answer
    x = 492,165.64

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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.