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Finding the Fourth Proportional to 79,657.92, 109,930.32 and 43,848.72

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Solution

The fourth proportional to 79,657.92, 109,930.32 and 43,848.72 is: 60,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,657.92 : 109,930.32 = 43,848.72 : x
  2. Step 2: Convert to fraction form
    79,657.92/109,930.32 = 43,848.72/x
  3. Step 3: Cross multiply
    79,657.92x = 109,930.32 × 43,848.72
  4. Step 4: Simplify right side
    79,657.92x = 4,820,303,821.19
  5. Step 5: Solve for x
    x = 4,820,303,821.19/79,657.92
  6. Step 6: Final answer
    x = 60,512.55

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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.