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Finding the Fourth Proportional to 91,082.84, 136,640.73 and 41,186.45

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Solution

The fourth proportional to 91,082.84, 136,640.73 and 41,186.45 is: 61,787.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,082.84 : 136,640.73 = 41,186.45 : x
  2. Step 2: Convert to fraction form
    91,082.84/136,640.73 = 41,186.45/x
  3. Step 3: Cross multiply
    91,082.84x = 136,640.73 × 41,186.45
  4. Step 4: Simplify right side
    91,082.84x = 5,627,746,594.11
  5. Step 5: Solve for x
    x = 5,627,746,594.11/91,082.84
  6. Step 6: Final answer
    x = 61,787.12

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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.