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Finding the Fourth Proportional to 89,606.52, 123,615.60 and 53,734.32

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Solution

The fourth proportional to 89,606.52, 123,615.60 and 53,734.32 is: 74,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,606.52 : 123,615.60 = 53,734.32 : x
  2. Step 2: Convert to fraction form
    89,606.52/123,615.60 = 53,734.32/x
  3. Step 3: Cross multiply
    89,606.52x = 123,615.60 × 53,734.32
  4. Step 4: Simplify right side
    89,606.52x = 6,642,400,207.39
  5. Step 5: Solve for x
    x = 6,642,400,207.39/89,606.52
  6. Step 6: Final answer
    x = 74,128.54

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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.