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Finding the Fourth Proportional to 53,274.51, 79,835.63 and 39,123.54

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Solution

The fourth proportional to 53,274.51, 79,835.63 and 39,123.54 is: 58,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,274.51 : 79,835.63 = 39,123.54 : x
  2. Step 2: Convert to fraction form
    53,274.51/79,835.63 = 39,123.54/x
  3. Step 3: Cross multiply
    53,274.51x = 79,835.63 × 39,123.54
  4. Step 4: Simplify right side
    53,274.51x = 3,123,452,268.11
  5. Step 5: Solve for x
    x = 3,123,452,268.11/53,274.51
  6. Step 6: Final answer
    x = 58,629.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.