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Finding the Fourth Proportional to 15,978.89, 23,952.20 and 6,605.98

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Solution

The fourth proportional to 15,978.89, 23,952.20 and 6,605.98 is: 9,902.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.89 : 23,952.20 = 6,605.98 : x
  2. Step 2: Convert to fraction form
    15,978.89/23,952.20 = 6,605.98/x
  3. Step 3: Cross multiply
    15,978.89x = 23,952.20 × 6,605.98
  4. Step 4: Simplify right side
    15,978.89x = 158,227,661.25
  5. Step 5: Solve for x
    x = 158,227,661.25/15,978.89
  6. Step 6: Final answer
    x = 9,902.29

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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.