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Finding the Fourth Proportional to 92,085.36, 127,041.81 and 51,789.88

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Solution

The fourth proportional to 92,085.36, 127,041.81 and 51,789.88 is: 71,449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,085.36 : 127,041.81 = 51,789.88 : x
  2. Step 2: Convert to fraction form
    92,085.36/127,041.81 = 51,789.88/x
  3. Step 3: Cross multiply
    92,085.36x = 127,041.81 × 51,789.88
  4. Step 4: Simplify right side
    92,085.36x = 6,579,480,094.88
  5. Step 5: Solve for x
    x = 6,579,480,094.88/92,085.36
  6. Step 6: Final answer
    x = 71,449.80

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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.