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Finding the Fourth Proportional to 18,763.98, 25,870.77 and 12,037.74

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Solution

The fourth proportional to 18,763.98, 25,870.77 and 12,037.74 is: 16,596.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.98 : 25,870.77 = 12,037.74 : x
  2. Step 2: Convert to fraction form
    18,763.98/25,870.77 = 12,037.74/x
  3. Step 3: Cross multiply
    18,763.98x = 25,870.77 × 12,037.74
  4. Step 4: Simplify right side
    18,763.98x = 311,425,602.86
  5. Step 5: Solve for x
    x = 311,425,602.86/18,763.98
  6. Step 6: Final answer
    x = 16,596.99

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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.