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Finding the Fourth Proportional to 124,634.68, 171,993.12 and 68,047

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Solution

The fourth proportional to 124,634.68, 171,993.12 and 68,047 is: 93,903.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,634.68 : 171,993.12 = 68,047 : x
  2. Step 2: Convert to fraction form
    124,634.68/171,993.12 = 68,047/x
  3. Step 3: Cross multiply
    124,634.68x = 171,993.12 × 68,047
  4. Step 4: Simplify right side
    124,634.68x = 11,703,615,836.64
  5. Step 5: Solve for x
    x = 11,703,615,836.64/124,634.68
  6. Step 6: Final answer
    x = 93,903.36

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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.