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Finding the Fourth Proportional to 18,797.64, 25,881.69 and 15,959.08

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Solution

The fourth proportional to 18,797.64, 25,881.69 and 15,959.08 is: 21,973.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.64 : 25,881.69 = 15,959.08 : x
  2. Step 2: Convert to fraction form
    18,797.64/25,881.69 = 15,959.08/x
  3. Step 3: Cross multiply
    18,797.64x = 25,881.69 × 15,959.08
  4. Step 4: Simplify right side
    18,797.64x = 413,047,961.25
  5. Step 5: Solve for x
    x = 413,047,961.25/18,797.64
  6. Step 6: Final answer
    x = 21,973.39

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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.