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Finding the Fourth Proportional to 886,879.72, 1,223,891.94 and 484,474.60

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Solution

The fourth proportional to 886,879.72, 1,223,891.94 and 484,474.60 is: 668,573.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,879.72 : 1,223,891.94 = 484,474.60 : x
  2. Step 2: Convert to fraction form
    886,879.72/1,223,891.94 = 484,474.60/x
  3. Step 3: Cross multiply
    886,879.72x = 1,223,891.94 × 484,474.60
  4. Step 4: Simplify right side
    886,879.72x = 592,944,558,074.72
  5. Step 5: Solve for x
    x = 592,944,558,074.72/886,879.72
  6. Step 6: Final answer
    x = 668,573.82

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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.