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Finding the Fourth Proportional to 53,302.75, 79,954.53 and 18,242.71

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Solution

The fourth proportional to 53,302.75, 79,954.53 and 18,242.71 is: 27,364.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,302.75 : 79,954.53 = 18,242.71 : x
  2. Step 2: Convert to fraction form
    53,302.75/79,954.53 = 18,242.71/x
  3. Step 3: Cross multiply
    53,302.75x = 79,954.53 × 18,242.71
  4. Step 4: Simplify right side
    53,302.75x = 1,458,587,303.98
  5. Step 5: Solve for x
    x = 1,458,587,303.98/53,302.75
  6. Step 6: Final answer
    x = 27,364.20

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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.