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Finding the Fourth Proportional to 470,793.15, 649,686.87 and 255,938.64

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Solution

The fourth proportional to 470,793.15, 649,686.87 and 255,938.64 is: 353,191.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,793.15 : 649,686.87 = 255,938.64 : x
  2. Step 2: Convert to fraction form
    470,793.15/649,686.87 = 255,938.64/x
  3. Step 3: Cross multiply
    470,793.15x = 649,686.87 × 255,938.64
  4. Step 4: Simplify right side
    470,793.15x = 166,279,973,933.66
  5. Step 5: Solve for x
    x = 166,279,973,933.66/470,793.15
  6. Step 6: Final answer
    x = 353,191.15

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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.