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Finding the Fourth Proportional to 445,643.01, 668,888.96 and 276,651.90

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Solution

The fourth proportional to 445,643.01, 668,888.96 and 276,651.90 is: 415,241.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,643.01 : 668,888.96 = 276,651.90 : x
  2. Step 2: Convert to fraction form
    445,643.01/668,888.96 = 276,651.90/x
  3. Step 3: Cross multiply
    445,643.01x = 668,888.96 × 276,651.90
  4. Step 4: Simplify right side
    445,643.01x = 185,049,400,289.77
  5. Step 5: Solve for x
    x = 185,049,400,289.77/445,643.01
  6. Step 6: Final answer
    x = 415,241.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.