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Finding the Fourth Proportional to 14,687.64, 20,268.95 and 7,973.26

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Solution

The fourth proportional to 14,687.64, 20,268.95 and 7,973.26 is: 11,003.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.64 : 20,268.95 = 7,973.26 : x
  2. Step 2: Convert to fraction form
    14,687.64/20,268.95 = 7,973.26/x
  3. Step 3: Cross multiply
    14,687.64x = 20,268.95 × 7,973.26
  4. Step 4: Simplify right side
    14,687.64x = 161,609,608.28
  5. Step 5: Solve for x
    x = 161,609,608.28/14,687.64
  6. Step 6: Final answer
    x = 11,003.10

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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.