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Finding the Fourth Proportional to 92,713.91, 127,928.51 and 51,878.86

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Solution

The fourth proportional to 92,713.91, 127,928.51 and 51,878.86 is: 71,583.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,713.91 : 127,928.51 = 51,878.86 : x
  2. Step 2: Convert to fraction form
    92,713.91/127,928.51 = 51,878.86/x
  3. Step 3: Cross multiply
    92,713.91x = 127,928.51 × 51,878.86
  4. Step 4: Simplify right side
    92,713.91x = 6,636,784,620.66
  5. Step 5: Solve for x
    x = 6,636,784,620.66/92,713.91
  6. Step 6: Final answer
    x = 71,583.48

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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.