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Finding the Fourth Proportional to 58,844.79, 81,205.87 and 31,987.30

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Solution

The fourth proportional to 58,844.79, 81,205.87 and 31,987.30 is: 44,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,844.79 : 81,205.87 = 31,987.30 : x
  2. Step 2: Convert to fraction form
    58,844.79/81,205.87 = 31,987.30/x
  3. Step 3: Cross multiply
    58,844.79x = 81,205.87 × 31,987.30
  4. Step 4: Simplify right side
    58,844.79x = 2,597,556,136.35
  5. Step 5: Solve for x
    x = 2,597,556,136.35/58,844.79
  6. Step 6: Final answer
    x = 44,142.50

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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.