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Finding the Fourth Proportional to 92,651.62, 127,867.10 and 77,517.58

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Solution

The fourth proportional to 92,651.62, 127,867.10 and 77,517.58 is: 106,980.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,651.62 : 127,867.10 = 77,517.58 : x
  2. Step 2: Convert to fraction form
    92,651.62/127,867.10 = 77,517.58/x
  3. Step 3: Cross multiply
    92,651.62x = 127,867.10 × 77,517.58
  4. Step 4: Simplify right side
    92,651.62x = 9,911,948,153.62
  5. Step 5: Solve for x
    x = 9,911,948,153.62/92,651.62
  6. Step 6: Final answer
    x = 106,980.84

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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.