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Finding the Fourth Proportional to 52,660.96, 72,671.96 and 28,787.64

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Solution

The fourth proportional to 52,660.96, 72,671.96 and 28,787.64 is: 39,726.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,660.96 : 72,671.96 = 28,787.64 : x
  2. Step 2: Convert to fraction form
    52,660.96/72,671.96 = 28,787.64/x
  3. Step 3: Cross multiply
    52,660.96x = 72,671.96 × 28,787.64
  4. Step 4: Simplify right side
    52,660.96x = 2,092,054,222.57
  5. Step 5: Solve for x
    x = 2,092,054,222.57/52,660.96
  6. Step 6: Final answer
    x = 39,726.85

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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.