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Finding the Fourth Proportional to 12,276.84, 18,415.08 and 3,042.84

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Solution

The fourth proportional to 12,276.84, 18,415.08 and 3,042.84 is: 4,564.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276.84 : 18,415.08 = 3,042.84 : x
  2. Step 2: Convert to fraction form
    12,276.84/18,415.08 = 3,042.84/x
  3. Step 3: Cross multiply
    12,276.84x = 18,415.08 × 3,042.84
  4. Step 4: Simplify right side
    12,276.84x = 56,034,142.03
  5. Step 5: Solve for x
    x = 56,034,142.03/12,276.84
  6. Step 6: Final answer
    x = 4,564.22

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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.