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Finding the Fourth Proportional to 92,776.80, 139,186.77 and 39,471.69

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Solution

The fourth proportional to 92,776.80, 139,186.77 and 39,471.69 is: 59,216.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,776.80 : 139,186.77 = 39,471.69 : x
  2. Step 2: Convert to fraction form
    92,776.80/139,186.77 = 39,471.69/x
  3. Step 3: Cross multiply
    92,776.80x = 139,186.77 × 39,471.69
  4. Step 4: Simplify right side
    92,776.80x = 5,493,937,037.54
  5. Step 5: Solve for x
    x = 5,493,937,037.54/92,776.80
  6. Step 6: Final answer
    x = 59,216.71

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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.