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Finding the Fourth Proportional to 68,976.93, 103,412.92 and 35,675.76

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Solution

The fourth proportional to 68,976.93, 103,412.92 and 35,675.76 is: 53,486.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,976.93 : 103,412.92 = 35,675.76 : x
  2. Step 2: Convert to fraction form
    68,976.93/103,412.92 = 35,675.76/x
  3. Step 3: Cross multiply
    68,976.93x = 103,412.92 × 35,675.76
  4. Step 4: Simplify right side
    68,976.93x = 3,689,334,514.82
  5. Step 5: Solve for x
    x = 3,689,334,514.82/68,976.93
  6. Step 6: Final answer
    x = 53,486.50

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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.