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Finding the Fourth Proportional to 12,193.80, 16,827.20 and 6,888.84

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Solution

The fourth proportional to 12,193.80, 16,827.20 and 6,888.84 is: 9,506.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,193.80 : 16,827.20 = 6,888.84 : x
  2. Step 2: Convert to fraction form
    12,193.80/16,827.20 = 6,888.84/x
  3. Step 3: Cross multiply
    12,193.80x = 16,827.20 × 6,888.84
  4. Step 4: Simplify right side
    12,193.80x = 115,919,888.45
  5. Step 5: Solve for x
    x = 115,919,888.45/12,193.80
  6. Step 6: Final answer
    x = 9,506.46

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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.