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Finding the Fourth Proportional to 133,310.88, 183,951.36 and 85,628.88

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Solution

The fourth proportional to 133,310.88, 183,951.36 and 85,628.88 is: 118,156.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,310.88 : 183,951.36 = 85,628.88 : x
  2. Step 2: Convert to fraction form
    133,310.88/183,951.36 = 85,628.88/x
  3. Step 3: Cross multiply
    133,310.88x = 183,951.36 × 85,628.88
  4. Step 4: Simplify right side
    133,310.88x = 15,751,548,931.28
  5. Step 5: Solve for x
    x = 15,751,548,931.28/133,310.88
  6. Step 6: Final answer
    x = 118,156.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.