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Finding the Fourth Proportional to 84,865.78, 117,114.84 and 46,627.79

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Solution

The fourth proportional to 84,865.78, 117,114.84 and 46,627.79 is: 64,346.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,865.78 : 117,114.84 = 46,627.79 : x
  2. Step 2: Convert to fraction form
    84,865.78/117,114.84 = 46,627.79/x
  3. Step 3: Cross multiply
    84,865.78x = 117,114.84 × 46,627.79
  4. Step 4: Simplify right side
    84,865.78x = 5,460,805,942.77
  5. Step 5: Solve for x
    x = 5,460,805,942.77/84,865.78
  6. Step 6: Final answer
    x = 64,346.39

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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.