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Finding the Fourth Proportional to 58,708.53, 81,017.80 and 31,851.03

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Solution

The fourth proportional to 58,708.53, 81,017.80 and 31,851.03 is: 43,954.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,708.53 : 81,017.80 = 31,851.03 : x
  2. Step 2: Convert to fraction form
    58,708.53/81,017.80 = 31,851.03/x
  3. Step 3: Cross multiply
    58,708.53x = 81,017.80 × 31,851.03
  4. Step 4: Simplify right side
    58,708.53x = 2,580,500,378.33
  5. Step 5: Solve for x
    x = 2,580,500,378.33/58,708.53
  6. Step 6: Final answer
    x = 43,954.44

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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.