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Finding the Fourth Proportional to 58,543.92, 80,790.81 and 31,686.42

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Solution

The fourth proportional to 58,543.92, 80,790.81 and 31,686.42 is: 43,727.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,543.92 : 80,790.81 = 31,686.42 : x
  2. Step 2: Convert to fraction form
    58,543.92/80,790.81 = 31,686.42/x
  3. Step 3: Cross multiply
    58,543.92x = 80,790.81 × 31,686.42
  4. Step 4: Simplify right side
    58,543.92x = 2,559,971,537.80
  5. Step 5: Solve for x
    x = 2,559,971,537.80/58,543.92
  6. Step 6: Final answer
    x = 43,727.37

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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.