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Finding the Fourth Proportional to 84,866.13, 117,194.04 and 54,721.98

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Solution

The fourth proportional to 84,866.13, 117,194.04 and 54,721.98 is: 75,567.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,866.13 : 117,194.04 = 54,721.98 : x
  2. Step 2: Convert to fraction form
    84,866.13/117,194.04 = 54,721.98/x
  3. Step 3: Cross multiply
    84,866.13x = 117,194.04 × 54,721.98
  4. Step 4: Simplify right side
    84,866.13x = 6,413,089,913.00
  5. Step 5: Solve for x
    x = 6,413,089,913.00/84,866.13
  6. Step 6: Final answer
    x = 75,567.13

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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.