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Finding the Fourth Proportional to 4,911.84, 7,368 and 2,415.30

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Solution

The fourth proportional to 4,911.84, 7,368 and 2,415.30 is: 3,623.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.84 : 7,368 = 2,415.30 : x
  2. Step 2: Convert to fraction form
    4,911.84/7,368 = 2,415.30/x
  3. Step 3: Cross multiply
    4,911.84x = 7,368 × 2,415.30
  4. Step 4: Simplify right side
    4,911.84x = 17,795,930.40
  5. Step 5: Solve for x
    x = 17,795,930.40/4,911.84
  6. Step 6: Final answer
    x = 3,623.07

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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.