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Finding the Fourth Proportional to 558,993.98, 771,372.78 and 317,281.48

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Solution

The fourth proportional to 558,993.98, 771,372.78 and 317,281.48 is: 437,826.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,993.98 : 771,372.78 = 317,281.48 : x
  2. Step 2: Convert to fraction form
    558,993.98/771,372.78 = 317,281.48/x
  3. Step 3: Cross multiply
    558,993.98x = 771,372.78 × 317,281.48
  4. Step 4: Simplify right side
    558,993.98x = 244,742,297,270.11
  5. Step 5: Solve for x
    x = 244,742,297,270.11/558,993.98
  6. Step 6: Final answer
    x = 437,826.36

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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.