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Finding the Fourth Proportional to 84,916.84, 117,187.62 and 49,103.40

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Solution

The fourth proportional to 84,916.84, 117,187.62 and 49,103.40 is: 67,764.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,916.84 : 117,187.62 = 49,103.40 : x
  2. Step 2: Convert to fraction form
    84,916.84/117,187.62 = 49,103.40/x
  3. Step 3: Cross multiply
    84,916.84x = 117,187.62 × 49,103.40
  4. Step 4: Simplify right side
    84,916.84x = 5,754,310,579.91
  5. Step 5: Solve for x
    x = 5,754,310,579.91/84,916.84
  6. Step 6: Final answer
    x = 67,764.07

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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.