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Finding the Fourth Proportional to 92,796.77, 139,215.65 and 39,485.90

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Solution

The fourth proportional to 92,796.77, 139,215.65 and 39,485.90 is: 59,237.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,796.77 : 139,215.65 = 39,485.90 : x
  2. Step 2: Convert to fraction form
    92,796.77/139,215.65 = 39,485.90/x
  3. Step 3: Cross multiply
    92,796.77x = 139,215.65 × 39,485.90
  4. Step 4: Simplify right side
    92,796.77x = 5,497,055,384.94
  5. Step 5: Solve for x
    x = 5,497,055,384.94/92,796.77
  6. Step 6: Final answer
    x = 59,237.57

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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.