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Finding the Fourth Proportional to 297,682.90, 446,302.91 and 129,171.81

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Solution

The fourth proportional to 297,682.90, 446,302.91 and 129,171.81 is: 193,661.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,682.90 : 446,302.91 = 129,171.81 : x
  2. Step 2: Convert to fraction form
    297,682.90/446,302.91 = 129,171.81/x
  3. Step 3: Cross multiply
    297,682.90x = 446,302.91 × 129,171.81
  4. Step 4: Simplify right side
    297,682.90x = 57,649,756,689.53
  5. Step 5: Solve for x
    x = 57,649,756,689.53/297,682.90
  6. Step 6: Final answer
    x = 193,661.64

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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.