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Finding the Fourth Proportional to 126,903.90, 190,361.48 and 70,701.42

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Solution

The fourth proportional to 126,903.90, 190,361.48 and 70,701.42 is: 106,055.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,903.90 : 190,361.48 = 70,701.42 : x
  2. Step 2: Convert to fraction form
    126,903.90/190,361.48 = 70,701.42/x
  3. Step 3: Cross multiply
    126,903.90x = 190,361.48 × 70,701.42
  4. Step 4: Simplify right side
    126,903.90x = 13,458,826,949.30
  5. Step 5: Solve for x
    x = 13,458,826,949.30/126,903.90
  6. Step 6: Final answer
    x = 106,055.27

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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.