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Finding the Fourth Proportional to 190,876.80, 286,606.80 and 131,973.60

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Solution

The fourth proportional to 190,876.80, 286,606.80 and 131,973.60 is: 198,162.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,876.80 : 286,606.80 = 131,973.60 : x
  2. Step 2: Convert to fraction form
    190,876.80/286,606.80 = 131,973.60/x
  3. Step 3: Cross multiply
    190,876.80x = 286,606.80 × 131,973.60
  4. Step 4: Simplify right side
    190,876.80x = 37,824,531,180.48
  5. Step 5: Solve for x
    x = 37,824,531,180.48/190,876.80
  6. Step 6: Final answer
    x = 198,162.01

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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.