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Finding the Fourth Proportional to 11,359.90, 15,676.05 and 6,579.01

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Solution

The fourth proportional to 11,359.90, 15,676.05 and 6,579.01 is: 9,078.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,359.90 : 15,676.05 = 6,579.01 : x
  2. Step 2: Convert to fraction form
    11,359.90/15,676.05 = 6,579.01/x
  3. Step 3: Cross multiply
    11,359.90x = 15,676.05 × 6,579.01
  4. Step 4: Simplify right side
    11,359.90x = 103,132,889.71
  5. Step 5: Solve for x
    x = 103,132,889.71/11,359.90
  6. Step 6: Final answer
    x = 9,078.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.