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Finding the Fourth Proportional to 18,134.98, 25,029.21 and 12,464.98

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Solution

The fourth proportional to 18,134.98, 25,029.21 and 12,464.98 is: 17,203.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,134.98 : 25,029.21 = 12,464.98 : x
  2. Step 2: Convert to fraction form
    18,134.98/25,029.21 = 12,464.98/x
  3. Step 3: Cross multiply
    18,134.98x = 25,029.21 × 12,464.98
  4. Step 4: Simplify right side
    18,134.98x = 311,988,602.07
  5. Step 5: Solve for x
    x = 311,988,602.07/18,134.98
  6. Step 6: Final answer
    x = 17,203.69

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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.