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Finding the Fourth Proportional to 543,518.15, 811,617.29 and 443,876.15

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Solution

The fourth proportional to 543,518.15, 811,617.29 and 443,876.15 is: 662,825.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,518.15 : 811,617.29 = 443,876.15 : x
  2. Step 2: Convert to fraction form
    543,518.15/811,617.29 = 443,876.15/x
  3. Step 3: Cross multiply
    543,518.15x = 811,617.29 × 443,876.15
  4. Step 4: Simplify right side
    543,518.15x = 360,257,557,958.63
  5. Step 5: Solve for x
    x = 360,257,557,958.63/543,518.15
  6. Step 6: Final answer
    x = 662,825.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.