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Finding the Fourth Proportional to 297,189.58, 445,782.80 and 72,551.20

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Solution

The fourth proportional to 297,189.58, 445,782.80 and 72,551.20 is: 108,826.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,189.58 : 445,782.80 = 72,551.20 : x
  2. Step 2: Convert to fraction form
    297,189.58/445,782.80 = 72,551.20/x
  3. Step 3: Cross multiply
    297,189.58x = 445,782.80 × 72,551.20
  4. Step 4: Simplify right side
    297,189.58x = 32,342,077,079.36
  5. Step 5: Solve for x
    x = 32,342,077,079.36/297,189.58
  6. Step 6: Final answer
    x = 108,826.42

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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.