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Finding the Fourth Proportional to 17,165.39, 25,750.87 and 5,316.39

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Solution

The fourth proportional to 17,165.39, 25,750.87 and 5,316.39 is: 7,975.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,165.39 : 25,750.87 = 5,316.39 : x
  2. Step 2: Convert to fraction form
    17,165.39/25,750.87 = 5,316.39/x
  3. Step 3: Cross multiply
    17,165.39x = 25,750.87 × 5,316.39
  4. Step 4: Simplify right side
    17,165.39x = 136,901,654.47
  5. Step 5: Solve for x
    x = 136,901,654.47/17,165.39
  6. Step 6: Final answer
    x = 7,975.45

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1.5x scale

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.