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Finding the Fourth Proportional to 453,172.44, 678,724.62 and 216,682.38

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Solution

The fourth proportional to 453,172.44, 678,724.62 and 216,682.38 is: 324,529.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,172.44 : 678,724.62 = 216,682.38 : x
  2. Step 2: Convert to fraction form
    453,172.44/678,724.62 = 216,682.38/x
  3. Step 3: Cross multiply
    453,172.44x = 678,724.62 × 216,682.38
  4. Step 4: Simplify right side
    453,172.44x = 147,067,666,026.20
  5. Step 5: Solve for x
    x = 147,067,666,026.20/453,172.44
  6. Step 6: Final answer
    x = 324,529.15

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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.