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Finding the Fourth Proportional to 52,765.80, 72,816.81 and 28,893.94

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Solution

The fourth proportional to 52,765.80, 72,816.81 and 28,893.94 is: 39,873.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,765.80 : 72,816.81 = 28,893.94 : x
  2. Step 2: Convert to fraction form
    52,765.80/72,816.81 = 28,893.94/x
  3. Step 3: Cross multiply
    52,765.80x = 72,816.81 × 28,893.94
  4. Step 4: Simplify right side
    52,765.80x = 2,103,964,539.13
  5. Step 5: Solve for x
    x = 2,103,964,539.13/52,765.80
  6. Step 6: Final answer
    x = 39,873.64

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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.