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Finding the Fourth Proportional to 296,474.89, 444,724.63 and 86,112.82

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Solution

The fourth proportional to 296,474.89, 444,724.63 and 86,112.82 is: 129,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,474.89 : 444,724.63 = 86,112.82 : x
  2. Step 2: Convert to fraction form
    296,474.89/444,724.63 = 86,112.82/x
  3. Step 3: Cross multiply
    296,474.89x = 444,724.63 × 86,112.82
  4. Step 4: Simplify right side
    296,474.89x = 38,296,492,012.76
  5. Step 5: Solve for x
    x = 38,296,492,012.76/296,474.89
  6. Step 6: Final answer
    x = 129,172.80

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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.