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Finding the Fourth Proportional to 8,619.13, 11,898.91 and 5,801.32

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Solution

The fourth proportional to 8,619.13, 11,898.91 and 5,801.32 is: 8,008.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.13 : 11,898.91 = 5,801.32 : x
  2. Step 2: Convert to fraction form
    8,619.13/11,898.91 = 5,801.32/x
  3. Step 3: Cross multiply
    8,619.13x = 11,898.91 × 5,801.32
  4. Step 4: Simplify right side
    8,619.13x = 69,029,384.56
  5. Step 5: Solve for x
    x = 69,029,384.56/8,619.13
  6. Step 6: Final answer
    x = 8,008.86

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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.