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Finding the Fourth Proportional to 98,394.72, 135,784.92 and 53,682.72

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Solution

The fourth proportional to 98,394.72, 135,784.92 and 53,682.72 is: 74,082.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,394.72 : 135,784.92 = 53,682.72 : x
  2. Step 2: Convert to fraction form
    98,394.72/135,784.92 = 53,682.72/x
  3. Step 3: Cross multiply
    98,394.72x = 135,784.92 × 53,682.72
  4. Step 4: Simplify right side
    98,394.72x = 7,289,303,840.58
  5. Step 5: Solve for x
    x = 7,289,303,840.58/98,394.72
  6. Step 6: Final answer
    x = 74,082.27

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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.