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Finding the Fourth Proportional to 98,342.53, 135,692.35 and 57,498.79

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Solution

The fourth proportional to 98,342.53, 135,692.35 and 57,498.79 is: 79,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,342.53 : 135,692.35 = 57,498.79 : x
  2. Step 2: Convert to fraction form
    98,342.53/135,692.35 = 57,498.79/x
  3. Step 3: Cross multiply
    98,342.53x = 135,692.35 × 57,498.79
  4. Step 4: Simplify right side
    98,342.53x = 7,802,145,937.26
  5. Step 5: Solve for x
    x = 7,802,145,937.26/98,342.53
  6. Step 6: Final answer
    x = 79,336.44

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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.