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Finding the Fourth Proportional to 57,795.28, 86,693.28 and 17,813.76

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Solution

The fourth proportional to 57,795.28, 86,693.28 and 17,813.76 is: 26,720.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,795.28 : 86,693.28 = 17,813.76 : x
  2. Step 2: Convert to fraction form
    57,795.28/86,693.28 = 17,813.76/x
  3. Step 3: Cross multiply
    57,795.28x = 86,693.28 × 17,813.76
  4. Step 4: Simplify right side
    57,795.28x = 1,544,333,283.53
  5. Step 5: Solve for x
    x = 1,544,333,283.53/57,795.28
  6. Step 6: Final answer
    x = 26,720.75

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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.