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Finding the Fourth Proportional to 76,858.93, 114,524.35 and 68,474.52

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Solution

The fourth proportional to 76,858.93, 114,524.35 and 68,474.52 is: 102,031.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,858.93 : 114,524.35 = 68,474.52 : x
  2. Step 2: Convert to fraction form
    76,858.93/114,524.35 = 68,474.52/x
  3. Step 3: Cross multiply
    76,858.93x = 114,524.35 × 68,474.52
  4. Step 4: Simplify right side
    76,858.93x = 7,841,999,894.56
  5. Step 5: Solve for x
    x = 7,841,999,894.56/76,858.93
  6. Step 6: Final answer
    x = 102,031.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.