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Finding the Fourth Proportional to 4,866.72, 7,299.36 and 1,788

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Solution

The fourth proportional to 4,866.72, 7,299.36 and 1,788 is: 2,681.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,866.72 : 7,299.36 = 1,788 : x
  2. Step 2: Convert to fraction form
    4,866.72/7,299.36 = 1,788/x
  3. Step 3: Cross multiply
    4,866.72x = 7,299.36 × 1,788
  4. Step 4: Simplify right side
    4,866.72x = 13,051,255.68
  5. Step 5: Solve for x
    x = 13,051,255.68/4,866.72
  6. Step 6: Final answer
    x = 2,681.74

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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.