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Finding the Fourth Proportional to 49,776.68, 74,621.28 and 18,604.64

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Solution

The fourth proportional to 49,776.68, 74,621.28 and 18,604.64 is: 27,890.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,776.68 : 74,621.28 = 18,604.64 : x
  2. Step 2: Convert to fraction form
    49,776.68/74,621.28 = 18,604.64/x
  3. Step 3: Cross multiply
    49,776.68x = 74,621.28 × 18,604.64
  4. Step 4: Simplify right side
    49,776.68x = 1,388,302,307.06
  5. Step 5: Solve for x
    x = 1,388,302,307.06/49,776.68
  6. Step 6: Final answer
    x = 27,890.62

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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.