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Finding the Fourth Proportional to 119,644.85, 179,422.59 and 39,668.15

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Solution

The fourth proportional to 119,644.85, 179,422.59 and 39,668.15 is: 59,487.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,644.85 : 179,422.59 = 39,668.15 : x
  2. Step 2: Convert to fraction form
    119,644.85/179,422.59 = 39,668.15/x
  3. Step 3: Cross multiply
    119,644.85x = 179,422.59 × 39,668.15
  4. Step 4: Simplify right side
    119,644.85x = 7,117,362,810.82
  5. Step 5: Solve for x
    x = 7,117,362,810.82/119,644.85
  6. Step 6: Final answer
    x = 59,487.41

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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.