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Finding the Fourth Proportional to 117,321.39, 175,988.93 and 45,274.68

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Solution

The fourth proportional to 117,321.39, 175,988.93 and 45,274.68 is: 67,914.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,321.39 : 175,988.93 = 45,274.68 : x
  2. Step 2: Convert to fraction form
    117,321.39/175,988.93 = 45,274.68/x
  3. Step 3: Cross multiply
    117,321.39x = 175,988.93 × 45,274.68
  4. Step 4: Simplify right side
    117,321.39x = 7,967,842,489.29
  5. Step 5: Solve for x
    x = 7,967,842,489.29/117,321.39
  6. Step 6: Final answer
    x = 67,914.66

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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.