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Finding the Fourth Proportional to 8,616.01, 11,889.90 and 4,787.39

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Solution

The fourth proportional to 8,616.01, 11,889.90 and 4,787.39 is: 6,606.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.01 : 11,889.90 = 4,787.39 : x
  2. Step 2: Convert to fraction form
    8,616.01/11,889.90 = 4,787.39/x
  3. Step 3: Cross multiply
    8,616.01x = 11,889.90 × 4,787.39
  4. Step 4: Simplify right side
    8,616.01x = 56,921,588.36
  5. Step 5: Solve for x
    x = 56,921,588.36/8,616.01
  6. Step 6: Final answer
    x = 6,606.49

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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.