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Finding the Fourth Proportional to 92,122.81, 127,127.99 and 51,836.55

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Solution

The fourth proportional to 92,122.81, 127,127.99 and 51,836.55 is: 71,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,122.81 : 127,127.99 = 51,836.55 : x
  2. Step 2: Convert to fraction form
    92,122.81/127,127.99 = 51,836.55/x
  3. Step 3: Cross multiply
    92,122.81x = 127,127.99 × 51,836.55
  4. Step 4: Simplify right side
    92,122.81x = 6,589,876,468.67
  5. Step 5: Solve for x
    x = 6,589,876,468.67/92,122.81
  6. Step 6: Final answer
    x = 71,533.60

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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.