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Finding the Fourth Proportional to 113,358.40, 156,499.38 and 75,169.84

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Solution

The fourth proportional to 113,358.40, 156,499.38 and 75,169.84 is: 103,777.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,358.40 : 156,499.38 = 75,169.84 : x
  2. Step 2: Convert to fraction form
    113,358.40/156,499.38 = 75,169.84/x
  3. Step 3: Cross multiply
    113,358.40x = 156,499.38 × 75,169.84
  4. Step 4: Simplify right side
    113,358.40x = 11,764,033,151.38
  5. Step 5: Solve for x
    x = 11,764,033,151.38/113,358.40
  6. Step 6: Final answer
    x = 103,777.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.