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Finding the Fourth Proportional to 92,729.72, 127,953.54 and 51,893.65

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Solution

The fourth proportional to 92,729.72, 127,953.54 and 51,893.65 is: 71,605.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,729.72 : 127,953.54 = 51,893.65 : x
  2. Step 2: Convert to fraction form
    92,729.72/127,953.54 = 51,893.65/x
  3. Step 3: Cross multiply
    92,729.72x = 127,953.54 × 51,893.65
  4. Step 4: Simplify right side
    92,729.72x = 6,639,975,901.14
  5. Step 5: Solve for x
    x = 6,639,975,901.14/92,729.72
  6. Step 6: Final answer
    x = 71,605.70

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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.