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Finding the Fourth Proportional to 56,591.81, 84,878.29 and 17,139.54

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Solution

The fourth proportional to 56,591.81, 84,878.29 and 17,139.54 is: 25,706.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,591.81 : 84,878.29 = 17,139.54 : x
  2. Step 2: Convert to fraction form
    56,591.81/84,878.29 = 17,139.54/x
  3. Step 3: Cross multiply
    56,591.81x = 84,878.29 × 17,139.54
  4. Step 4: Simplify right side
    56,591.81x = 1,454,775,186.30
  5. Step 5: Solve for x
    x = 1,454,775,186.30/56,591.81
  6. Step 6: Final answer
    x = 25,706.46

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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.