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Finding the Fourth Proportional to 51,433.92, 70,979.76 and 29,077.92

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Solution

The fourth proportional to 51,433.92, 70,979.76 and 29,077.92 is: 40,128.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,433.92 : 70,979.76 = 29,077.92 : x
  2. Step 2: Convert to fraction form
    51,433.92/70,979.76 = 29,077.92/x
  3. Step 3: Cross multiply
    51,433.92x = 70,979.76 × 29,077.92
  4. Step 4: Simplify right side
    51,433.92x = 2,063,943,782.90
  5. Step 5: Solve for x
    x = 2,063,943,782.90/51,433.92
  6. Step 6: Final answer
    x = 40,128.07

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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.