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Finding the Fourth Proportional to 470,559.51, 649,375.69 and 255,700.73

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Solution

The fourth proportional to 470,559.51, 649,375.69 and 255,700.73 is: 352,868.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,559.51 : 649,375.69 = 255,700.73 : x
  2. Step 2: Convert to fraction form
    470,559.51/649,375.69 = 255,700.73/x
  3. Step 3: Cross multiply
    470,559.51x = 649,375.69 × 255,700.73
  4. Step 4: Simplify right side
    470,559.51x = 166,045,837,977.25
  5. Step 5: Solve for x
    x = 166,045,837,977.25/470,559.51
  6. Step 6: Final answer
    x = 352,868.95

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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.