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Finding the Fourth Proportional to 84,815.80, 118,586.60 and 84,815.80

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Solution

The fourth proportional to 84,815.80, 118,586.60 and 84,815.80 is: 118,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,815.80 : 118,586.60 = 84,815.80 : x
  2. Step 2: Convert to fraction form
    84,815.80/118,586.60 = 84,815.80/x
  3. Step 3: Cross multiply
    84,815.80x = 118,586.60 × 84,815.80
  4. Step 4: Simplify right side
    84,815.80x = 10,058,017,348.28
  5. Step 5: Solve for x
    x = 10,058,017,348.28/84,815.80
  6. Step 6: Final answer
    x = 118,586.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.