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Finding the Fourth Proportional to 92,788.92, 128,048.13 and 50,346.54

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Solution

The fourth proportional to 92,788.92, 128,048.13 and 50,346.54 is: 69,477.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,788.92 : 128,048.13 = 50,346.54 : x
  2. Step 2: Convert to fraction form
    92,788.92/128,048.13 = 50,346.54/x
  3. Step 3: Cross multiply
    92,788.92x = 128,048.13 × 50,346.54
  4. Step 4: Simplify right side
    92,788.92x = 6,446,780,298.97
  5. Step 5: Solve for x
    x = 6,446,780,298.97/92,788.92
  6. Step 6: Final answer
    x = 69,477.91

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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.