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Finding the Fourth Proportional to 14,485.17, 19,989.69 and 8,896.17

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Solution

The fourth proportional to 14,485.17, 19,989.69 and 8,896.17 is: 12,276.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.17 : 19,989.69 = 8,896.17 : x
  2. Step 2: Convert to fraction form
    14,485.17/19,989.69 = 8,896.17/x
  3. Step 3: Cross multiply
    14,485.17x = 19,989.69 × 8,896.17
  4. Step 4: Simplify right side
    14,485.17x = 177,831,680.49
  5. Step 5: Solve for x
    x = 177,831,680.49/14,485.17
  6. Step 6: Final answer
    x = 12,276.81

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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.