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Finding the Fourth Proportional to 447,083.20, 668,875.20 and 289,619.20

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Solution

The fourth proportional to 447,083.20, 668,875.20 and 289,619.20 is: 433,295.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,083.20 : 668,875.20 = 289,619.20 : x
  2. Step 2: Convert to fraction form
    447,083.20/668,875.20 = 289,619.20/x
  3. Step 3: Cross multiply
    447,083.20x = 668,875.20 × 289,619.20
  4. Step 4: Simplify right side
    447,083.20x = 193,719,100,323.84
  5. Step 5: Solve for x
    x = 193,719,100,323.84/447,083.20
  6. Step 6: Final answer
    x = 433,295.41

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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.