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Finding the Fourth Proportional to 863,679.12, 1,191,879 and 481,696.08

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Solution

The fourth proportional to 863,679.12, 1,191,879 and 481,696.08 is: 664,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,679.12 : 1,191,879 = 481,696.08 : x
  2. Step 2: Convert to fraction form
    863,679.12/1,191,879 = 481,696.08/x
  3. Step 3: Cross multiply
    863,679.12x = 1,191,879 × 481,696.08
  4. Step 4: Simplify right side
    863,679.12x = 574,123,442,134.32
  5. Step 5: Solve for x
    x = 574,123,442,134.32/863,679.12
  6. Step 6: Final answer
    x = 664,741.60

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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.