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Finding the Fourth Proportional to 358,854.29, 538,263.54 and 134,198.21

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Solution

The fourth proportional to 358,854.29, 538,263.54 and 134,198.21 is: 201,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,854.29 : 538,263.54 = 134,198.21 : x
  2. Step 2: Convert to fraction form
    358,854.29/538,263.54 = 134,198.21/x
  3. Step 3: Cross multiply
    358,854.29x = 538,263.54 × 134,198.21
  4. Step 4: Simplify right side
    358,854.29x = 72,234,000,884.95
  5. Step 5: Solve for x
    x = 72,234,000,884.95/358,854.29
  6. Step 6: Final answer
    x = 201,290.62

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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.