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Finding the Fourth Proportional to 45,301.36, 67,978.76 and 17,245.02

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Solution

The fourth proportional to 45,301.36, 67,978.76 and 17,245.02 is: 25,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,301.36 : 67,978.76 = 17,245.02 : x
  2. Step 2: Convert to fraction form
    45,301.36/67,978.76 = 17,245.02/x
  3. Step 3: Cross multiply
    45,301.36x = 67,978.76 × 17,245.02
  4. Step 4: Simplify right side
    45,301.36x = 1,172,295,075.78
  5. Step 5: Solve for x
    x = 1,172,295,075.78/45,301.36
  6. Step 6: Final answer
    x = 25,877.70

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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.