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Finding the Fourth Proportional to 98,907.56, 136,418.02 and 68,692.92

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Solution

The fourth proportional to 98,907.56, 136,418.02 and 68,692.92 is: 94,744.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,907.56 : 136,418.02 = 68,692.92 : x
  2. Step 2: Convert to fraction form
    98,907.56/136,418.02 = 68,692.92/x
  3. Step 3: Cross multiply
    98,907.56x = 136,418.02 × 68,692.92
  4. Step 4: Simplify right side
    98,907.56x = 9,370,952,134.42
  5. Step 5: Solve for x
    x = 9,370,952,134.42/98,907.56
  6. Step 6: Final answer
    x = 94,744.55

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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.