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Finding the Fourth Proportional to 79,342.43, 109,492.54 and 45,351.64

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Solution

The fourth proportional to 79,342.43, 109,492.54 and 45,351.64 is: 62,585.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,342.43 : 109,492.54 = 45,351.64 : x
  2. Step 2: Convert to fraction form
    79,342.43/109,492.54 = 45,351.64/x
  3. Step 3: Cross multiply
    79,342.43x = 109,492.54 × 45,351.64
  4. Step 4: Simplify right side
    79,342.43x = 4,965,665,869.66
  5. Step 5: Solve for x
    x = 4,965,665,869.66/79,342.43
  6. Step 6: Final answer
    x = 62,585.25

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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.