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Finding the Fourth Proportional to 470,718.55, 649,595.52 and 255,858.58

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Solution

The fourth proportional to 470,718.55, 649,595.52 and 255,858.58 is: 353,086.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,718.55 : 649,595.52 = 255,858.58 : x
  2. Step 2: Convert to fraction form
    470,718.55/649,595.52 = 255,858.58/x
  3. Step 3: Cross multiply
    470,718.55x = 649,595.52 × 255,858.58
  4. Step 4: Simplify right side
    470,718.55x = 166,204,587,321.56
  5. Step 5: Solve for x
    x = 166,204,587,321.56/470,718.55
  6. Step 6: Final answer
    x = 353,086.97

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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.