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Finding the Fourth Proportional to 32,490.99, 48,736.49 and 20,878.02

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Solution

The fourth proportional to 32,490.99, 48,736.49 and 20,878.02 is: 31,317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,490.99 : 48,736.49 = 20,878.02 : x
  2. Step 2: Convert to fraction form
    32,490.99/48,736.49 = 20,878.02/x
  3. Step 3: Cross multiply
    32,490.99x = 48,736.49 × 20,878.02
  4. Step 4: Simplify right side
    32,490.99x = 1,017,521,308.56
  5. Step 5: Solve for x
    x = 1,017,521,308.56/32,490.99
  6. Step 6: Final answer
    x = 31,317.03

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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.