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Finding the Fourth Proportional to 722,297.20, 996,439.28 and 467,730.40

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Solution

The fourth proportional to 722,297.20, 996,439.28 and 467,730.40 is: 645,253.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,297.20 : 996,439.28 = 467,730.40 : x
  2. Step 2: Convert to fraction form
    722,297.20/996,439.28 = 467,730.40/x
  3. Step 3: Cross multiply
    722,297.20x = 996,439.28 × 467,730.40
  4. Step 4: Simplify right side
    722,297.20x = 466,064,943,010.11
  5. Step 5: Solve for x
    x = 466,064,943,010.11/722,297.20
  6. Step 6: Final answer
    x = 645,253.70

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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.