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Finding the Fourth Proportional to 74,209.68, 102,412.69 and 52,722.41

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Solution

The fourth proportional to 74,209.68, 102,412.69 and 52,722.41 is: 72,759.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,209.68 : 102,412.69 = 52,722.41 : x
  2. Step 2: Convert to fraction form
    74,209.68/102,412.69 = 52,722.41/x
  3. Step 3: Cross multiply
    74,209.68x = 102,412.69 × 52,722.41
  4. Step 4: Simplify right side
    74,209.68x = 5,399,443,187.51
  5. Step 5: Solve for x
    x = 5,399,443,187.51/74,209.68
  6. Step 6: Final answer
    x = 72,759.28

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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.