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Finding the Fourth Proportional to 695,434.41, 959,634.95 and 393,628.41

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Solution

The fourth proportional to 695,434.41, 959,634.95 and 393,628.41 is: 543,170.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,434.41 : 959,634.95 = 393,628.41 : x
  2. Step 2: Convert to fraction form
    695,434.41/959,634.95 = 393,628.41/x
  3. Step 3: Cross multiply
    695,434.41x = 959,634.95 × 393,628.41
  4. Step 4: Simplify right side
    695,434.41x = 377,739,577,580.79
  5. Step 5: Solve for x
    x = 377,739,577,580.79/695,434.41
  6. Step 6: Final answer
    x = 543,170.67

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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.