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Finding the Fourth Proportional to 18,768.86, 25,897.14 and 12,053.55

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Solution

The fourth proportional to 18,768.86, 25,897.14 and 12,053.55 is: 16,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.86 : 25,897.14 = 12,053.55 : x
  2. Step 2: Convert to fraction form
    18,768.86/25,897.14 = 12,053.55/x
  3. Step 3: Cross multiply
    18,768.86x = 25,897.14 × 12,053.55
  4. Step 4: Simplify right side
    18,768.86x = 312,152,471.85
  5. Step 5: Solve for x
    x = 312,152,471.85/18,768.86
  6. Step 6: Final answer
    x = 16,631.41

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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.