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Finding the Fourth Proportional to 79,392.68, 109,565.70 and 43,582.28

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Solution

The fourth proportional to 79,392.68, 109,565.70 and 43,582.28 is: 60,145.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,392.68 : 109,565.70 = 43,582.28 : x
  2. Step 2: Convert to fraction form
    79,392.68/109,565.70 = 43,582.28/x
  3. Step 3: Cross multiply
    79,392.68x = 109,565.70 × 43,582.28
  4. Step 4: Simplify right side
    79,392.68x = 4,775,123,015.80
  5. Step 5: Solve for x
    x = 4,775,123,015.80/79,392.68
  6. Step 6: Final answer
    x = 60,145.63

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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.