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Finding the Fourth Proportional to 28,978.04, 43,467.06 and 15,823.23

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Solution

The fourth proportional to 28,978.04, 43,467.06 and 15,823.23 is: 23,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978.04 : 43,467.06 = 15,823.23 : x
  2. Step 2: Convert to fraction form
    28,978.04/43,467.06 = 15,823.23/x
  3. Step 3: Cross multiply
    28,978.04x = 43,467.06 × 15,823.23
  4. Step 4: Simplify right side
    28,978.04x = 687,789,287.80
  5. Step 5: Solve for x
    x = 687,789,287.80/28,978.04
  6. Step 6: Final answer
    x = 23,734.85

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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.