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Finding the Fourth Proportional to 165,615.52, 248,364.96 and 53,291.20

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Solution

The fourth proportional to 165,615.52, 248,364.96 and 53,291.20 is: 79,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,615.52 : 248,364.96 = 53,291.20 : x
  2. Step 2: Convert to fraction form
    165,615.52/248,364.96 = 53,291.20/x
  3. Step 3: Cross multiply
    165,615.52x = 248,364.96 × 53,291.20
  4. Step 4: Simplify right side
    165,615.52x = 13,235,666,756.35
  5. Step 5: Solve for x
    x = 13,235,666,756.35/165,615.52
  6. Step 6: Final answer
    x = 79,918.03

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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.