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Finding the Fourth Proportional to 18,888.84, 28,274.94 and 16,089.48

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Solution

The fourth proportional to 18,888.84, 28,274.94 and 16,089.48 is: 24,084.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.84 : 28,274.94 = 16,089.48 : x
  2. Step 2: Convert to fraction form
    18,888.84/28,274.94 = 16,089.48/x
  3. Step 3: Cross multiply
    18,888.84x = 28,274.94 × 16,089.48
  4. Step 4: Simplify right side
    18,888.84x = 454,929,081.63
  5. Step 5: Solve for x
    x = 454,929,081.63/18,888.84
  6. Step 6: Final answer
    x = 24,084.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.