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Finding the Fourth Proportional to 92,661.72, 127,872.28 and 51,825.40

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Solution

The fourth proportional to 92,661.72, 127,872.28 and 51,825.40 is: 71,518.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,661.72 : 127,872.28 = 51,825.40 : x
  2. Step 2: Convert to fraction form
    92,661.72/127,872.28 = 51,825.40/x
  3. Step 3: Cross multiply
    92,661.72x = 127,872.28 × 51,825.40
  4. Step 4: Simplify right side
    92,661.72x = 6,627,032,059.91
  5. Step 5: Solve for x
    x = 6,627,032,059.91/92,661.72
  6. Step 6: Final answer
    x = 71,518.55

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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.