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Finding the Fourth Proportional to 92,628.78, 127,780.74 and 58,579.92

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Solution

The fourth proportional to 92,628.78, 127,780.74 and 58,579.92 is: 80,810.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,628.78 : 127,780.74 = 58,579.92 : x
  2. Step 2: Convert to fraction form
    92,628.78/127,780.74 = 58,579.92/x
  3. Step 3: Cross multiply
    92,628.78x = 127,780.74 × 58,579.92
  4. Step 4: Simplify right side
    92,628.78x = 7,485,385,526.74
  5. Step 5: Solve for x
    x = 7,485,385,526.74/92,628.78
  6. Step 6: Final answer
    x = 80,810.58

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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.