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Finding the Fourth Proportional to 104,486.40, 156,796.80 and 57,772.80

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Solution

The fourth proportional to 104,486.40, 156,796.80 and 57,772.80 is: 86,696.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,486.40 : 156,796.80 = 57,772.80 : x
  2. Step 2: Convert to fraction form
    104,486.40/156,796.80 = 57,772.80/x
  3. Step 3: Cross multiply
    104,486.40x = 156,796.80 × 57,772.80
  4. Step 4: Simplify right side
    104,486.40x = 9,058,590,167.04
  5. Step 5: Solve for x
    x = 9,058,590,167.04/104,486.40
  6. Step 6: Final answer
    x = 86,696.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.