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Finding the Fourth Proportional to 52,745.52, 72,788.04 and 28,871.58

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Solution

The fourth proportional to 52,745.52, 72,788.04 and 28,871.58 is: 39,842.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,745.52 : 72,788.04 = 28,871.58 : x
  2. Step 2: Convert to fraction form
    52,745.52/72,788.04 = 28,871.58/x
  3. Step 3: Cross multiply
    52,745.52x = 72,788.04 × 28,871.58
  4. Step 4: Simplify right side
    52,745.52x = 2,101,505,719.90
  5. Step 5: Solve for x
    x = 2,101,505,719.90/52,745.52
  6. Step 6: Final answer
    x = 39,842.35

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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.