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Finding the Fourth Proportional to 25,215.34, 37,821.79 and 6,239.90

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Solution

The fourth proportional to 25,215.34, 37,821.79 and 6,239.90 is: 9,359.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,215.34 : 37,821.79 = 6,239.90 : x
  2. Step 2: Convert to fraction form
    25,215.34/37,821.79 = 6,239.90/x
  3. Step 3: Cross multiply
    25,215.34x = 37,821.79 × 6,239.90
  4. Step 4: Simplify right side
    25,215.34x = 236,003,998.31
  5. Step 5: Solve for x
    x = 236,003,998.31/25,215.34
  6. Step 6: Final answer
    x = 9,359.54

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1.5x scale

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.