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Finding the Fourth Proportional to 614.59, 847.09 and 393.19

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Solution

The fourth proportional to 614.59, 847.09 and 393.19 is: 541.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.59 : 847.09 = 393.19 : x
  2. Step 2: Convert to fraction form
    614.59/847.09 = 393.19/x
  3. Step 3: Cross multiply
    614.59x = 847.09 × 393.19
  4. Step 4: Simplify right side
    614.59x = 333,065.69
  5. Step 5: Solve for x
    x = 333,065.69/614.59
  6. Step 6: Final answer
    x = 541.93

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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.