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Finding the Fourth Proportional to 12,364.20, 18,548.10 and 4,042.20

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Solution

The fourth proportional to 12,364.20, 18,548.10 and 4,042.20 is: 6,063.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,364.20 : 18,548.10 = 4,042.20 : x
  2. Step 2: Convert to fraction form
    12,364.20/18,548.10 = 4,042.20/x
  3. Step 3: Cross multiply
    12,364.20x = 18,548.10 × 4,042.20
  4. Step 4: Simplify right side
    12,364.20x = 74,975,129.82
  5. Step 5: Solve for x
    x = 74,975,129.82/12,364.20
  6. Step 6: Final answer
    x = 6,063.89

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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.