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Finding the Fourth Proportional to 92,762.61, 128,012.77 and 50,321.44

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Solution

The fourth proportional to 92,762.61, 128,012.77 and 50,321.44 is: 69,443.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,762.61 : 128,012.77 = 50,321.44 : x
  2. Step 2: Convert to fraction form
    92,762.61/128,012.77 = 50,321.44/x
  3. Step 3: Cross multiply
    92,762.61x = 128,012.77 × 50,321.44
  4. Step 4: Simplify right side
    92,762.61x = 6,441,786,924.79
  5. Step 5: Solve for x
    x = 6,441,786,924.79/92,762.61
  6. Step 6: Final answer
    x = 69,443.79

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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.