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Finding the Fourth Proportional to 8,670.45, 11,965.17 and 4,894.84

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Solution

The fourth proportional to 8,670.45, 11,965.17 and 4,894.84 is: 6,754.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.45 : 11,965.17 = 4,894.84 : x
  2. Step 2: Convert to fraction form
    8,670.45/11,965.17 = 4,894.84/x
  3. Step 3: Cross multiply
    8,670.45x = 11,965.17 × 4,894.84
  4. Step 4: Simplify right side
    8,670.45x = 58,567,592.72
  5. Step 5: Solve for x
    x = 58,567,592.72/8,670.45
  6. Step 6: Final answer
    x = 6,754.85

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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.