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Finding the Fourth Proportional to 92,638.83, 127,792.28 and 56,351.37

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Solution

The fourth proportional to 92,638.83, 127,792.28 and 56,351.37 is: 77,734.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,638.83 : 127,792.28 = 56,351.37 : x
  2. Step 2: Convert to fraction form
    92,638.83/127,792.28 = 56,351.37/x
  3. Step 3: Cross multiply
    92,638.83x = 127,792.28 × 56,351.37
  4. Step 4: Simplify right side
    92,638.83x = 7,201,269,771.67
  5. Step 5: Solve for x
    x = 7,201,269,771.67/92,638.83
  6. Step 6: Final answer
    x = 77,734.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.