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Finding the Fourth Proportional to 12,493.49, 18,740.23 and 3,259.49

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Solution

The fourth proportional to 12,493.49, 18,740.23 and 3,259.49 is: 4,889.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,493.49 : 18,740.23 = 3,259.49 : x
  2. Step 2: Convert to fraction form
    12,493.49/18,740.23 = 3,259.49/x
  3. Step 3: Cross multiply
    12,493.49x = 18,740.23 × 3,259.49
  4. Step 4: Simplify right side
    12,493.49x = 61,083,482.28
  5. Step 5: Solve for x
    x = 61,083,482.28/12,493.49
  6. Step 6: Final answer
    x = 4,889.23

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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.