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Finding the Fourth Proportional to 92,655.62, 127,872.62 and 77,521.58

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Solution

The fourth proportional to 92,655.62, 127,872.62 and 77,521.58 is: 106,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,655.62 : 127,872.62 = 77,521.58 : x
  2. Step 2: Convert to fraction form
    92,655.62/127,872.62 = 77,521.58/x
  3. Step 3: Cross multiply
    92,655.62x = 127,872.62 × 77,521.58
  4. Step 4: Simplify right side
    92,655.62x = 9,912,887,541.14
  5. Step 5: Solve for x
    x = 9,912,887,541.14/92,655.62
  6. Step 6: Final answer
    x = 106,986.36

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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.