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Finding the Fourth Proportional to 84,957, 117,240.80 and 47,231.25

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Solution

The fourth proportional to 84,957, 117,240.80 and 47,231.25 is: 65,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,957 : 117,240.80 = 47,231.25 : x
  2. Step 2: Convert to fraction form
    84,957/117,240.80 = 47,231.25/x
  3. Step 3: Cross multiply
    84,957x = 117,240.80 × 47,231.25
  4. Step 4: Simplify right side
    84,957x = 5,537,429,535
  5. Step 5: Solve for x
    x = 5,537,429,535/84,957
  6. Step 6: Final answer
    x = 65,179.20

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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.