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Finding the Fourth Proportional to 368,031.78, 552,046.95 and 115,331.58

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Solution

The fourth proportional to 368,031.78, 552,046.95 and 115,331.58 is: 172,997.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,031.78 : 552,046.95 = 115,331.58 : x
  2. Step 2: Convert to fraction form
    368,031.78/552,046.95 = 115,331.58/x
  3. Step 3: Cross multiply
    368,031.78x = 552,046.95 × 115,331.58
  4. Step 4: Simplify right side
    368,031.78x = 63,668,446,977.68
  5. Step 5: Solve for x
    x = 63,668,446,977.68/368,031.78
  6. Step 6: Final answer
    x = 172,997.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.