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Finding the Fourth Proportional to 57,362.68, 86,031.04 and 21,811.32

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Solution

The fourth proportional to 57,362.68, 86,031.04 and 21,811.32 is: 32,712.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,362.68 : 86,031.04 = 21,811.32 : x
  2. Step 2: Convert to fraction form
    57,362.68/86,031.04 = 21,811.32/x
  3. Step 3: Cross multiply
    57,362.68x = 86,031.04 × 21,811.32
  4. Step 4: Simplify right side
    57,362.68x = 1,876,450,543.37
  5. Step 5: Solve for x
    x = 1,876,450,543.37/57,362.68
  6. Step 6: Final answer
    x = 32,712.04

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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.