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Finding the Fourth Proportional to 117,132.88, 175,515.36 and 90,544

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Solution

The fourth proportional to 117,132.88, 175,515.36 and 90,544 is: 135,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,132.88 : 175,515.36 = 90,544 : x
  2. Step 2: Convert to fraction form
    117,132.88/175,515.36 = 90,544/x
  3. Step 3: Cross multiply
    117,132.88x = 175,515.36 × 90,544
  4. Step 4: Simplify right side
    117,132.88x = 15,891,862,755.84
  5. Step 5: Solve for x
    x = 15,891,862,755.84/117,132.88
  6. Step 6: Final answer
    x = 135,673.80

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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.