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Finding the Fourth Proportional to 79,465.86, 109,664.82 and 43,658.19

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Solution

The fourth proportional to 79,465.86, 109,664.82 and 43,658.19 is: 60,249.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,465.86 : 109,664.82 = 43,658.19 : x
  2. Step 2: Convert to fraction form
    79,465.86/109,664.82 = 43,658.19/x
  3. Step 3: Cross multiply
    79,465.86x = 109,664.82 × 43,658.19
  4. Step 4: Simplify right side
    79,465.86x = 4,787,767,547.88
  5. Step 5: Solve for x
    x = 4,787,767,547.88/79,465.86
  6. Step 6: Final answer
    x = 60,249.36

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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.