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Finding the Fourth Proportional to 8,619.57, 11,895 and 4,893.57

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Solution

The fourth proportional to 8,619.57, 11,895 and 4,893.57 is: 6,753.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.57 : 11,895 = 4,893.57 : x
  2. Step 2: Convert to fraction form
    8,619.57/11,895 = 4,893.57/x
  3. Step 3: Cross multiply
    8,619.57x = 11,895 × 4,893.57
  4. Step 4: Simplify right side
    8,619.57x = 58,209,015.15
  5. Step 5: Solve for x
    x = 58,209,015.15/8,619.57
  6. Step 6: Final answer
    x = 6,753.12

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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.