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Finding the Fourth Proportional to 127,191.88, 175,489.23 and 79,493.68

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Solution

The fourth proportional to 127,191.88, 175,489.23 and 79,493.68 is: 109,679.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,191.88 : 175,489.23 = 79,493.68 : x
  2. Step 2: Convert to fraction form
    127,191.88/175,489.23 = 79,493.68/x
  3. Step 3: Cross multiply
    127,191.88x = 175,489.23 × 79,493.68
  4. Step 4: Simplify right side
    127,191.88x = 13,950,284,693.07
  5. Step 5: Solve for x
    x = 13,950,284,693.07/127,191.88
  6. Step 6: Final answer
    x = 109,679.05

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1.5x scale

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.