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Finding the Fourth Proportional to 141,312.68, 194,955.62 and 91,041

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Solution

The fourth proportional to 141,312.68, 194,955.62 and 91,041 is: 125,600.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,312.68 : 194,955.62 = 91,041 : x
  2. Step 2: Convert to fraction form
    141,312.68/194,955.62 = 91,041/x
  3. Step 3: Cross multiply
    141,312.68x = 194,955.62 × 91,041
  4. Step 4: Simplify right side
    141,312.68x = 17,748,954,600.42
  5. Step 5: Solve for x
    x = 17,748,954,600.42/141,312.68
  6. Step 6: Final answer
    x = 125,600.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.