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Finding the Fourth Proportional to 358,187.31, 537,315.86 and 133,495.11

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Solution

The fourth proportional to 358,187.31, 537,315.86 and 133,495.11 is: 200,255.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,187.31 : 537,315.86 = 133,495.11 : x
  2. Step 2: Convert to fraction form
    358,187.31/537,315.86 = 133,495.11/x
  3. Step 3: Cross multiply
    358,187.31x = 537,315.86 × 133,495.11
  4. Step 4: Simplify right side
    358,187.31x = 71,729,039,167.97
  5. Step 5: Solve for x
    x = 71,729,039,167.97/358,187.31
  6. Step 6: Final answer
    x = 200,255.67

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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.