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Finding the Fourth Proportional to 56,759.77, 85,152.97 and 17,316.87

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Solution

The fourth proportional to 56,759.77, 85,152.97 and 17,316.87 is: 25,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,759.77 : 85,152.97 = 17,316.87 : x
  2. Step 2: Convert to fraction form
    56,759.77/85,152.97 = 17,316.87/x
  3. Step 3: Cross multiply
    56,759.77x = 85,152.97 × 17,316.87
  4. Step 4: Simplify right side
    56,759.77x = 1,474,582,868.31
  5. Step 5: Solve for x
    x = 1,474,582,868.31/56,759.77
  6. Step 6: Final answer
    x = 25,979.37

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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.