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Finding the Fourth Proportional to 291,853.43, 437,756.78 and 129,797.66

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Solution

The fourth proportional to 291,853.43, 437,756.78 and 129,797.66 is: 194,686.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,853.43 : 437,756.78 = 129,797.66 : x
  2. Step 2: Convert to fraction form
    291,853.43/437,756.78 = 129,797.66/x
  3. Step 3: Cross multiply
    291,853.43x = 437,756.78 × 129,797.66
  4. Step 4: Simplify right side
    291,853.43x = 56,819,802,855.36
  5. Step 5: Solve for x
    x = 56,819,802,855.36/291,853.43
  6. Step 6: Final answer
    x = 194,686.09

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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.