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Finding the Fourth Proportional to 455,911.44, 683,255.80 and 354,831.56

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Solution

The fourth proportional to 455,911.44, 683,255.80 and 354,831.56 is: 531,771.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,911.44 : 683,255.80 = 354,831.56 : x
  2. Step 2: Convert to fraction form
    455,911.44/683,255.80 = 354,831.56/x
  3. Step 3: Cross multiply
    455,911.44x = 683,255.80 × 354,831.56
  4. Step 4: Simplify right side
    455,911.44x = 242,440,721,393.05
  5. Step 5: Solve for x
    x = 242,440,721,393.05/455,911.44
  6. Step 6: Final answer
    x = 531,771.52

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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.