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Finding the Fourth Proportional to 61,390.44, 92,009.88 and 31,791.24

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Solution

The fourth proportional to 61,390.44, 92,009.88 and 31,791.24 is: 47,647.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,390.44 : 92,009.88 = 31,791.24 : x
  2. Step 2: Convert to fraction form
    61,390.44/92,009.88 = 31,791.24/x
  3. Step 3: Cross multiply
    61,390.44x = 92,009.88 × 31,791.24
  4. Step 4: Simplify right side
    61,390.44x = 2,925,108,177.45
  5. Step 5: Solve for x
    x = 2,925,108,177.45/61,390.44
  6. Step 6: Final answer
    x = 47,647.62

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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.