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Finding the Fourth Proportional to 354,451.92, 531,218.61 and 143,975.04

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Solution

The fourth proportional to 354,451.92, 531,218.61 and 143,975.04 is: 215,776.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,451.92 : 531,218.61 = 143,975.04 : x
  2. Step 2: Convert to fraction form
    354,451.92/531,218.61 = 143,975.04/x
  3. Step 3: Cross multiply
    354,451.92x = 531,218.61 × 143,975.04
  4. Step 4: Simplify right side
    354,451.92x = 76,482,220,623.49
  5. Step 5: Solve for x
    x = 76,482,220,623.49/354,451.92
  6. Step 6: Final answer
    x = 215,776.01

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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.