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Finding the Fourth Proportional to 470,663.45, 649,511.68 and 255,804.82

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Solution

The fourth proportional to 470,663.45, 649,511.68 and 255,804.82 is: 353,008.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,663.45 : 649,511.68 = 255,804.82 : x
  2. Step 2: Convert to fraction form
    470,663.45/649,511.68 = 255,804.82/x
  3. Step 3: Cross multiply
    470,663.45x = 649,511.68 × 255,804.82
  4. Step 4: Simplify right side
    470,663.45x = 166,148,218,390.30
  5. Step 5: Solve for x
    x = 166,148,218,390.30/470,663.45
  6. Step 6: Final answer
    x = 353,008.54

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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.