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Finding the Fourth Proportional to 79,508.54, 109,715.33 and 45,509.29

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Solution

The fourth proportional to 79,508.54, 109,715.33 and 45,509.29 is: 62,799.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,508.54 : 109,715.33 = 45,509.29 : x
  2. Step 2: Convert to fraction form
    79,508.54/109,715.33 = 45,509.29/x
  3. Step 3: Cross multiply
    79,508.54x = 109,715.33 × 45,509.29
  4. Step 4: Simplify right side
    79,508.54x = 4,993,066,609.90
  5. Step 5: Solve for x
    x = 4,993,066,609.90/79,508.54
  6. Step 6: Final answer
    x = 62,799.12

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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.