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Finding the Fourth Proportional to 14,168.66, 19,551.97 and 7,880.63

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Solution

The fourth proportional to 14,168.66, 19,551.97 and 7,880.63 is: 10,874.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,168.66 : 19,551.97 = 7,880.63 : x
  2. Step 2: Convert to fraction form
    14,168.66/19,551.97 = 7,880.63/x
  3. Step 3: Cross multiply
    14,168.66x = 19,551.97 × 7,880.63
  4. Step 4: Simplify right side
    14,168.66x = 154,081,890.22
  5. Step 5: Solve for x
    x = 154,081,890.22/14,168.66
  6. Step 6: Final answer
    x = 10,874.84

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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.