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Finding the Fourth Proportional to 611,186.63, 843,490.92 and 356,619.83

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Solution

The fourth proportional to 611,186.63, 843,490.92 and 356,619.83 is: 492,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,186.63 : 843,490.92 = 356,619.83 : x
  2. Step 2: Convert to fraction form
    611,186.63/843,490.92 = 356,619.83/x
  3. Step 3: Cross multiply
    611,186.63x = 843,490.92 × 356,619.83
  4. Step 4: Simplify right side
    611,186.63x = 300,805,588,496.94
  5. Step 5: Solve for x
    x = 300,805,588,496.94/611,186.63
  6. Step 6: Final answer
    x = 492,166.51

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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.