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Finding the Fourth Proportional to 18,304.86, 25,241.84 and 15,661.02

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Solution

The fourth proportional to 18,304.86, 25,241.84 and 15,661.02 is: 21,596.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,304.86 : 25,241.84 = 15,661.02 : x
  2. Step 2: Convert to fraction form
    18,304.86/25,241.84 = 15,661.02/x
  3. Step 3: Cross multiply
    18,304.86x = 25,241.84 × 15,661.02
  4. Step 4: Simplify right side
    18,304.86x = 395,312,961.08
  5. Step 5: Solve for x
    x = 395,312,961.08/18,304.86
  6. Step 6: Final answer
    x = 21,596.07

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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.