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Finding the Fourth Proportional to 61,291.20, 91,936.72 and 53,592.96

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Solution

The fourth proportional to 61,291.20, 91,936.72 and 53,592.96 is: 80,389.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,291.20 : 91,936.72 = 53,592.96 : x
  2. Step 2: Convert to fraction form
    61,291.20/91,936.72 = 53,592.96/x
  3. Step 3: Cross multiply
    61,291.20x = 91,936.72 × 53,592.96
  4. Step 4: Simplify right side
    61,291.20x = 4,927,160,957.49
  5. Step 5: Solve for x
    x = 4,927,160,957.49/61,291.20
  6. Step 6: Final answer
    x = 80,389.37

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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.