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Finding the Fourth Proportional to 129,989.88, 194,984.86 and 46,883.88

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Solution

The fourth proportional to 129,989.88, 194,984.86 and 46,883.88 is: 70,325.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,989.88 : 194,984.86 = 46,883.88 : x
  2. Step 2: Convert to fraction form
    129,989.88/194,984.86 = 46,883.88/x
  3. Step 3: Cross multiply
    129,989.88x = 194,984.86 × 46,883.88
  4. Step 4: Simplify right side
    129,989.88x = 9,141,646,778.06
  5. Step 5: Solve for x
    x = 9,141,646,778.06/129,989.88
  6. Step 6: Final answer
    x = 70,325.83

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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.