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Finding the Fourth Proportional to 479,238.72, 718,858.08 and 146,771.52

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Solution

The fourth proportional to 479,238.72, 718,858.08 and 146,771.52 is: 220,157.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,238.72 : 718,858.08 = 146,771.52 : x
  2. Step 2: Convert to fraction form
    479,238.72/718,858.08 = 146,771.52/x
  3. Step 3: Cross multiply
    479,238.72x = 718,858.08 × 146,771.52
  4. Step 4: Simplify right side
    479,238.72x = 105,507,893,065.88
  5. Step 5: Solve for x
    x = 105,507,893,065.88/479,238.72
  6. Step 6: Final answer
    x = 220,157.28

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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.