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Finding the Fourth Proportional to 18,470.84, 27,706.08 and 4,619.84

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Solution

The fourth proportional to 18,470.84, 27,706.08 and 4,619.84 is: 6,929.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470.84 : 27,706.08 = 4,619.84 : x
  2. Step 2: Convert to fraction form
    18,470.84/27,706.08 = 4,619.84/x
  3. Step 3: Cross multiply
    18,470.84x = 27,706.08 × 4,619.84
  4. Step 4: Simplify right side
    18,470.84x = 127,997,656.63
  5. Step 5: Solve for x
    x = 127,997,656.63/18,470.84
  6. Step 6: Final answer
    x = 6,929.71

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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.