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Finding the Fourth Proportional to 57,459.68, 86,172.68 and 22,390.96

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Solution

The fourth proportional to 57,459.68, 86,172.68 and 22,390.96 is: 33,579.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,459.68 : 86,172.68 = 22,390.96 : x
  2. Step 2: Convert to fraction form
    57,459.68/86,172.68 = 22,390.96/x
  3. Step 3: Cross multiply
    57,459.68x = 86,172.68 × 22,390.96
  4. Step 4: Simplify right side
    57,459.68x = 1,929,489,030.97
  5. Step 5: Solve for x
    x = 1,929,489,030.97/57,459.68
  6. Step 6: Final answer
    x = 33,579.88

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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.