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Finding the Fourth Proportional to 8,699.52, 11,986.56 and 5,900.16

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Solution

The fourth proportional to 8,699.52, 11,986.56 and 5,900.16 is: 8,129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.52 : 11,986.56 = 5,900.16 : x
  2. Step 2: Convert to fraction form
    8,699.52/11,986.56 = 5,900.16/x
  3. Step 3: Cross multiply
    8,699.52x = 11,986.56 × 5,900.16
  4. Step 4: Simplify right side
    8,699.52x = 70,722,621.85
  5. Step 5: Solve for x
    x = 70,722,621.85/8,699.52
  6. Step 6: Final answer
    x = 8,129.49

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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.