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Finding the Fourth Proportional to 46,643.91, 69,976.79 and 15,479.16

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Solution

The fourth proportional to 46,643.91, 69,976.79 and 15,479.16 is: 23,222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,643.91 : 69,976.79 = 15,479.16 : x
  2. Step 2: Convert to fraction form
    46,643.91/69,976.79 = 15,479.16/x
  3. Step 3: Cross multiply
    46,643.91x = 69,976.79 × 15,479.16
  4. Step 4: Simplify right side
    46,643.91x = 1,083,181,734.00
  5. Step 5: Solve for x
    x = 1,083,181,734.00/46,643.91
  6. Step 6: Final answer
    x = 23,222.36

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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.