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Finding the Fourth Proportional to 58,782.70, 81,120.72 and 31,925.26

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Solution

The fourth proportional to 58,782.70, 81,120.72 and 31,925.26 is: 44,057.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,782.70 : 81,120.72 = 31,925.26 : x
  2. Step 2: Convert to fraction form
    58,782.70/81,120.72 = 31,925.26/x
  3. Step 3: Cross multiply
    58,782.70x = 81,120.72 × 31,925.26
  4. Step 4: Simplify right side
    58,782.70x = 2,589,800,077.39
  5. Step 5: Solve for x
    x = 2,589,800,077.39/58,782.70
  6. Step 6: Final answer
    x = 44,057.18

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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.