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Finding the Fourth Proportional to 53,269.51, 79,828.11 and 39,118.54

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Solution

The fourth proportional to 53,269.51, 79,828.11 and 39,118.54 is: 58,621.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,269.51 : 79,828.11 = 39,118.54 : x
  2. Step 2: Convert to fraction form
    53,269.51/79,828.11 = 39,118.54/x
  3. Step 3: Cross multiply
    53,269.51x = 79,828.11 × 39,118.54
  4. Step 4: Simplify right side
    53,269.51x = 3,122,759,114.16
  5. Step 5: Solve for x
    x = 3,122,759,114.16/53,269.51
  6. Step 6: Final answer
    x = 58,621.89

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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.