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Finding the Fourth Proportional to 133,283.88, 183,913.94 and 85,601.81

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Solution

The fourth proportional to 133,283.88, 183,913.94 and 85,601.81 is: 118,119.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,283.88 : 183,913.94 = 85,601.81 : x
  2. Step 2: Convert to fraction form
    133,283.88/183,913.94 = 85,601.81/x
  3. Step 3: Cross multiply
    133,283.88x = 183,913.94 × 85,601.81
  4. Step 4: Simplify right side
    133,283.88x = 15,743,366,822.02
  5. Step 5: Solve for x
    x = 15,743,366,822.02/133,283.88
  6. Step 6: Final answer
    x = 118,119.06

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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.