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Finding the Fourth Proportional to 321,637.80, 443,918.97 and 185,653.17

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Solution

The fourth proportional to 321,637.80, 443,918.97 and 185,653.17 is: 256,235.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,637.80 : 443,918.97 = 185,653.17 : x
  2. Step 2: Convert to fraction form
    321,637.80/443,918.97 = 185,653.17/x
  3. Step 3: Cross multiply
    321,637.80x = 443,918.97 × 185,653.17
  4. Step 4: Simplify right side
    321,637.80x = 82,414,964,003.63
  5. Step 5: Solve for x
    x = 82,414,964,003.63/321,637.80
  6. Step 6: Final answer
    x = 256,235.32

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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.