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Finding the Fourth Proportional to 14,687.88, 20,269.46 and 7,973.58

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Solution

The fourth proportional to 14,687.88, 20,269.46 and 7,973.58 is: 11,003.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.88 : 20,269.46 = 7,973.58 : x
  2. Step 2: Convert to fraction form
    14,687.88/20,269.46 = 7,973.58/x
  3. Step 3: Cross multiply
    14,687.88x = 20,269.46 × 7,973.58
  4. Step 4: Simplify right side
    14,687.88x = 161,620,160.87
  5. Step 5: Solve for x
    x = 161,620,160.87/14,687.88
  6. Step 6: Final answer
    x = 11,003.64

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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.