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Finding the Fourth Proportional to 363,742.74, 501,990.21 and 220,508.82

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Solution

The fourth proportional to 363,742.74, 501,990.21 and 220,508.82 is: 304,317.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,742.74 : 501,990.21 = 220,508.82 : x
  2. Step 2: Convert to fraction form
    363,742.74/501,990.21 = 220,508.82/x
  3. Step 3: Cross multiply
    363,742.74x = 501,990.21 × 220,508.82
  4. Step 4: Simplify right side
    363,742.74x = 110,693,268,858.65
  5. Step 5: Solve for x
    x = 110,693,268,858.65/363,742.74
  6. Step 6: Final answer
    x = 304,317.47

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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.