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Finding the Fourth Proportional to 15,978.93, 23,958.02 and 6,616.41

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Solution

The fourth proportional to 15,978.93, 23,958.02 and 6,616.41 is: 9,920.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.93 : 23,958.02 = 6,616.41 : x
  2. Step 2: Convert to fraction form
    15,978.93/23,958.02 = 6,616.41/x
  3. Step 3: Cross multiply
    15,978.93x = 23,958.02 × 6,616.41
  4. Step 4: Simplify right side
    15,978.93x = 158,516,050.03
  5. Step 5: Solve for x
    x = 158,516,050.03/15,978.93
  6. Step 6: Final answer
    x = 9,920.32

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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.