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Finding the Fourth Proportional to 57,366.68, 86,037.04 and 21,815.32

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Solution

The fourth proportional to 57,366.68, 86,037.04 and 21,815.32 is: 32,718.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,366.68 : 86,037.04 = 21,815.32 : x
  2. Step 2: Convert to fraction form
    57,366.68/86,037.04 = 21,815.32/x
  3. Step 3: Cross multiply
    57,366.68x = 86,037.04 × 21,815.32
  4. Step 4: Simplify right side
    57,366.68x = 1,876,925,559.45
  5. Step 5: Solve for x
    x = 1,876,925,559.45/57,366.68
  6. Step 6: Final answer
    x = 32,718.04

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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.