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Finding the Fourth Proportional to 8,628.68, 11,893.86 and 6,529.16

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Solution

The fourth proportional to 8,628.68, 11,893.86 and 6,529.16 is: 8,999.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.68 : 11,893.86 = 6,529.16 : x
  2. Step 2: Convert to fraction form
    8,628.68/11,893.86 = 6,529.16/x
  3. Step 3: Cross multiply
    8,628.68x = 11,893.86 × 6,529.16
  4. Step 4: Simplify right side
    8,628.68x = 77,656,914.96
  5. Step 5: Solve for x
    x = 77,656,914.96/8,628.68
  6. Step 6: Final answer
    x = 8,999.86

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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.