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Finding the Fourth Proportional to 358,954.23, 538,640.65 and 134,472.35

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Solution

The fourth proportional to 358,954.23, 538,640.65 and 134,472.35 is: 201,786.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,954.23 : 538,640.65 = 134,472.35 : x
  2. Step 2: Convert to fraction form
    358,954.23/538,640.65 = 134,472.35/x
  3. Step 3: Cross multiply
    358,954.23x = 538,640.65 × 134,472.35
  4. Step 4: Simplify right side
    358,954.23x = 72,432,275,525.72
  5. Step 5: Solve for x
    x = 72,432,275,525.72/358,954.23
  6. Step 6: Final answer
    x = 201,786.94

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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.