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Finding the Fourth Proportional to 666,796.56, 920,199.60 and 364,990.56

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Solution

The fourth proportional to 666,796.56, 920,199.60 and 364,990.56 is: 503,698.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,796.56 : 920,199.60 = 364,990.56 : x
  2. Step 2: Convert to fraction form
    666,796.56/920,199.60 = 364,990.56/x
  3. Step 3: Cross multiply
    666,796.56x = 920,199.60 × 364,990.56
  4. Step 4: Simplify right side
    666,796.56x = 335,864,167,315.78
  5. Step 5: Solve for x
    x = 335,864,167,315.78/666,796.56
  6. Step 6: Final answer
    x = 503,698.11

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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.