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Finding the Fourth Proportional to 345,031.21, 517,595.41 and 120,358.88

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Solution

The fourth proportional to 345,031.21, 517,595.41 and 120,358.88 is: 180,555.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,031.21 : 517,595.41 = 120,358.88 : x
  2. Step 2: Convert to fraction form
    345,031.21/517,595.41 = 120,358.88/x
  3. Step 3: Cross multiply
    345,031.21x = 517,595.41 × 120,358.88
  4. Step 4: Simplify right side
    345,031.21x = 62,297,201,252.76
  5. Step 5: Solve for x
    x = 62,297,201,252.76/345,031.21
  6. Step 6: Final answer
    x = 180,555.27

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