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Finding the Fourth Proportional to 35,940.20, 53,900.70 and 12,564.20

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Solution

The fourth proportional to 35,940.20, 53,900.70 and 12,564.20 is: 18,842.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,940.20 : 53,900.70 = 12,564.20 : x
  2. Step 2: Convert to fraction form
    35,940.20/53,900.70 = 12,564.20/x
  3. Step 3: Cross multiply
    35,940.20x = 53,900.70 × 12,564.20
  4. Step 4: Simplify right side
    35,940.20x = 677,219,174.94
  5. Step 5: Solve for x
    x = 677,219,174.94/35,940.20
  6. Step 6: Final answer
    x = 18,842.94

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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.