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Finding the Fourth Proportional to 358,910.48, 538,459.17 and 134,288.48

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Solution

The fourth proportional to 358,910.48, 538,459.17 and 134,288.48 is: 201,467.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,910.48 : 538,459.17 = 134,288.48 : x
  2. Step 2: Convert to fraction form
    358,910.48/538,459.17 = 134,288.48/x
  3. Step 3: Cross multiply
    358,910.48x = 538,459.17 × 134,288.48
  4. Step 4: Simplify right side
    358,910.48x = 72,308,860,117.62
  5. Step 5: Solve for x
    x = 72,308,860,117.62/358,910.48
  6. Step 6: Final answer
    x = 201,467.68

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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.