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Finding the Fourth Proportional to 132,419.32, 182,736.46 and 71,991.48

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Solution

The fourth proportional to 132,419.32, 182,736.46 and 71,991.48 is: 99,347.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,419.32 : 182,736.46 = 71,991.48 : x
  2. Step 2: Convert to fraction form
    132,419.32/182,736.46 = 71,991.48/x
  3. Step 3: Cross multiply
    132,419.32x = 182,736.46 × 71,991.48
  4. Step 4: Simplify right side
    132,419.32x = 13,155,468,205.36
  5. Step 5: Solve for x
    x = 13,155,468,205.36/132,419.32
  6. Step 6: Final answer
    x = 99,347.05

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1.5x scale

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.