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Finding the Fourth Proportional to 107,959.49, 149,057.48 and 69,811.32

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Solution

The fourth proportional to 107,959.49, 149,057.48 and 69,811.32 is: 96,387.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,959.49 : 149,057.48 = 69,811.32 : x
  2. Step 2: Convert to fraction form
    107,959.49/149,057.48 = 69,811.32/x
  3. Step 3: Cross multiply
    107,959.49x = 149,057.48 × 69,811.32
  4. Step 4: Simplify right side
    107,959.49x = 10,405,899,434.67
  5. Step 5: Solve for x
    x = 10,405,899,434.67/107,959.49
  6. Step 6: Final answer
    x = 96,387.07

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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.