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Finding the Fourth Proportional to 403,351.74, 556,620.90 and 222,059.91

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Solution

The fourth proportional to 403,351.74, 556,620.90 and 222,059.91 is: 306,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,351.74 : 556,620.90 = 222,059.91 : x
  2. Step 2: Convert to fraction form
    403,351.74/556,620.90 = 222,059.91/x
  3. Step 3: Cross multiply
    403,351.74x = 556,620.90 × 222,059.91
  4. Step 4: Simplify right side
    403,351.74x = 123,603,186,958.12
  5. Step 5: Solve for x
    x = 123,603,186,958.12/403,351.74
  6. Step 6: Final answer
    x = 306,440.20

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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.