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Finding the Fourth Proportional to 128,496.88, 191,804.22 and 113,346.80

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Solution

The fourth proportional to 128,496.88, 191,804.22 and 113,346.80 is: 169,190.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,496.88 : 191,804.22 = 113,346.80 : x
  2. Step 2: Convert to fraction form
    128,496.88/191,804.22 = 113,346.80/x
  3. Step 3: Cross multiply
    128,496.88x = 191,804.22 × 113,346.80
  4. Step 4: Simplify right side
    128,496.88x = 21,740,394,563.50
  5. Step 5: Solve for x
    x = 21,740,394,563.50/128,496.88
  6. Step 6: Final answer
    x = 169,190.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.