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Finding the Fourth Proportional to 113,090.40, 169,635.60 and 60,472.80

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Solution

The fourth proportional to 113,090.40, 169,635.60 and 60,472.80 is: 90,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,090.40 : 169,635.60 = 60,472.80 : x
  2. Step 2: Convert to fraction form
    113,090.40/169,635.60 = 60,472.80/x
  3. Step 3: Cross multiply
    113,090.40x = 169,635.60 × 60,472.80
  4. Step 4: Simplify right side
    113,090.40x = 10,258,339,711.68
  5. Step 5: Solve for x
    x = 10,258,339,711.68/113,090.40
  6. Step 6: Final answer
    x = 90,709.20

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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.