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Finding the Fourth Proportional to 330,234.30, 455,605.83 and 186,963.66

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Solution

The fourth proportional to 330,234.30, 455,605.83 and 186,963.66 is: 257,943.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,234.30 : 455,605.83 = 186,963.66 : x
  2. Step 2: Convert to fraction form
    330,234.30/455,605.83 = 186,963.66/x
  3. Step 3: Cross multiply
    330,234.30x = 455,605.83 × 186,963.66
  4. Step 4: Simplify right side
    330,234.30x = 85,181,733,494.14
  5. Step 5: Solve for x
    x = 85,181,733,494.14/330,234.30
  6. Step 6: Final answer
    x = 257,943.33

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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.