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Finding the Fourth Proportional to 92,890.90, 139,292.41 and 35,991.44

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Solution

The fourth proportional to 92,890.90, 139,292.41 and 35,991.44 is: 53,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,890.90 : 139,292.41 = 35,991.44 : x
  2. Step 2: Convert to fraction form
    92,890.90/139,292.41 = 35,991.44/x
  3. Step 3: Cross multiply
    92,890.90x = 139,292.41 × 35,991.44
  4. Step 4: Simplify right side
    92,890.90x = 5,013,334,220.36
  5. Step 5: Solve for x
    x = 5,013,334,220.36/92,890.90
  6. Step 6: Final answer
    x = 53,970.13

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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.