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Finding the Fourth Proportional to 11,970.52, 17,958.78 and 7,044.28

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Solution

The fourth proportional to 11,970.52, 17,958.78 and 7,044.28 is: 10,568.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.52 : 17,958.78 = 7,044.28 : x
  2. Step 2: Convert to fraction form
    11,970.52/17,958.78 = 7,044.28/x
  3. Step 3: Cross multiply
    11,970.52x = 17,958.78 × 7,044.28
  4. Step 4: Simplify right side
    11,970.52x = 126,506,674.78
  5. Step 5: Solve for x
    x = 126,506,674.78/11,970.52
  6. Step 6: Final answer
    x = 10,568.19

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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.