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Finding the Fourth Proportional to 74,494.97, 102,734.96 and 55,422.51

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Solution

The fourth proportional to 74,494.97, 102,734.96 and 55,422.51 is: 76,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,494.97 : 102,734.96 = 55,422.51 : x
  2. Step 2: Convert to fraction form
    74,494.97/102,734.96 = 55,422.51/x
  3. Step 3: Cross multiply
    74,494.97x = 102,734.96 × 55,422.51
  4. Step 4: Simplify right side
    74,494.97x = 5,693,829,419.34
  5. Step 5: Solve for x
    x = 5,693,829,419.34/74,494.97
  6. Step 6: Final answer
    x = 76,432.40

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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.