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Finding the Fourth Proportional to 505,680.44, 697,860.21 and 290,820.66

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Solution

The fourth proportional to 505,680.44, 697,860.21 and 290,820.66 is: 401,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,680.44 : 697,860.21 = 290,820.66 : x
  2. Step 2: Convert to fraction form
    505,680.44/697,860.21 = 290,820.66/x
  3. Step 3: Cross multiply
    505,680.44x = 697,860.21 × 290,820.66
  4. Step 4: Simplify right side
    505,680.44x = 202,952,167,623.14
  5. Step 5: Solve for x
    x = 202,952,167,623.14/505,680.44
  6. Step 6: Final answer
    x = 401,344.71

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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.