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Finding the Fourth Proportional to 548,676.20, 756,754.44 and 472,320.74

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Solution

The fourth proportional to 548,676.20, 756,754.44 and 472,320.74 is: 651,442.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,676.20 : 756,754.44 = 472,320.74 : x
  2. Step 2: Convert to fraction form
    548,676.20/756,754.44 = 472,320.74/x
  3. Step 3: Cross multiply
    548,676.20x = 756,754.44 × 472,320.74
  4. Step 4: Simplify right side
    548,676.20x = 357,430,817,099.09
  5. Step 5: Solve for x
    x = 357,430,817,099.09/548,676.20
  6. Step 6: Final answer
    x = 651,442.18

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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.