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Finding the Fourth Proportional to 48,487.36, 72,764.52 and 31,855.36

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Solution

The fourth proportional to 48,487.36, 72,764.52 and 31,855.36 is: 47,805.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,487.36 : 72,764.52 = 31,855.36 : x
  2. Step 2: Convert to fraction form
    48,487.36/72,764.52 = 31,855.36/x
  3. Step 3: Cross multiply
    48,487.36x = 72,764.52 × 31,855.36
  4. Step 4: Simplify right side
    48,487.36x = 2,317,939,979.83
  5. Step 5: Solve for x
    x = 2,317,939,979.83/48,487.36
  6. Step 6: Final answer
    x = 47,805.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.