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Finding the Fourth Proportional to 8,620.25, 11,895.95 and 4,894.25

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Solution

The fourth proportional to 8,620.25, 11,895.95 and 4,894.25 is: 6,754.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.25 : 11,895.95 = 4,894.25 : x
  2. Step 2: Convert to fraction form
    8,620.25/11,895.95 = 4,894.25/x
  3. Step 3: Cross multiply
    8,620.25x = 11,895.95 × 4,894.25
  4. Step 4: Simplify right side
    8,620.25x = 58,221,728.82
  5. Step 5: Solve for x
    x = 58,221,728.82/8,620.25
  6. Step 6: Final answer
    x = 6,754.07

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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.