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Finding the Fourth Proportional to 9,968.80, 14,920.80 and 7,052.80

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Solution

The fourth proportional to 9,968.80, 14,920.80 and 7,052.80 is: 10,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,968.80 : 14,920.80 = 7,052.80 : x
  2. Step 2: Convert to fraction form
    9,968.80/14,920.80 = 7,052.80/x
  3. Step 3: Cross multiply
    9,968.80x = 14,920.80 × 7,052.80
  4. Step 4: Simplify right side
    9,968.80x = 105,233,418.24
  5. Step 5: Solve for x
    x = 105,233,418.24/9,968.80
  6. Step 6: Final answer
    x = 10,556.28

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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.