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Finding the Fourth Proportional to 163,396.80, 245,102.40 and 92,318.40

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Solution

The fourth proportional to 163,396.80, 245,102.40 and 92,318.40 is: 138,481.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,396.80 : 245,102.40 = 92,318.40 : x
  2. Step 2: Convert to fraction form
    163,396.80/245,102.40 = 92,318.40/x
  3. Step 3: Cross multiply
    163,396.80x = 245,102.40 × 92,318.40
  4. Step 4: Simplify right side
    163,396.80x = 22,627,461,404.16
  5. Step 5: Solve for x
    x = 22,627,461,404.16/163,396.80
  6. Step 6: Final answer
    x = 138,481.67

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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.