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Finding the Fourth Proportional to 58,565.98, 80,821.10 and 31,708.51

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Solution

The fourth proportional to 58,565.98, 80,821.10 and 31,708.51 is: 43,757.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,565.98 : 80,821.10 = 31,708.51 : x
  2. Step 2: Convert to fraction form
    58,565.98/80,821.10 = 31,708.51/x
  3. Step 3: Cross multiply
    58,565.98x = 80,821.10 × 31,708.51
  4. Step 4: Simplify right side
    58,565.98x = 2,562,716,657.56
  5. Step 5: Solve for x
    x = 2,562,716,657.56/58,565.98
  6. Step 6: Final answer
    x = 43,757.77

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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.