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Finding the Fourth Proportional to 18,754.39, 25,860.45 and 12,037.48

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Solution

The fourth proportional to 18,754.39, 25,860.45 and 12,037.48 is: 16,598.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.39 : 25,860.45 = 12,037.48 : x
  2. Step 2: Convert to fraction form
    18,754.39/25,860.45 = 12,037.48/x
  3. Step 3: Cross multiply
    18,754.39x = 25,860.45 × 12,037.48
  4. Step 4: Simplify right side
    18,754.39x = 311,294,649.67
  5. Step 5: Solve for x
    x = 311,294,649.67/18,754.39
  6. Step 6: Final answer
    x = 16,598.50

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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.