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Finding the Fourth Proportional to 8,648.91, 11,930.97 and 5,461.05

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Solution

The fourth proportional to 8,648.91, 11,930.97 and 5,461.05 is: 7,533.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.91 : 11,930.97 = 5,461.05 : x
  2. Step 2: Convert to fraction form
    8,648.91/11,930.97 = 5,461.05/x
  3. Step 3: Cross multiply
    8,648.91x = 11,930.97 × 5,461.05
  4. Step 4: Simplify right side
    8,648.91x = 65,155,623.72
  5. Step 5: Solve for x
    x = 65,155,623.72/8,648.91
  6. Step 6: Final answer
    x = 7,533.39

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1.5x scale

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.