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Finding the Fourth Proportional to 192,184.80, 287,888.40 and 133,087.20

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Solution

The fourth proportional to 192,184.80, 287,888.40 and 133,087.20 is: 199,361.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,184.80 : 287,888.40 = 133,087.20 : x
  2. Step 2: Convert to fraction form
    192,184.80/287,888.40 = 133,087.20/x
  3. Step 3: Cross multiply
    192,184.80x = 287,888.40 × 133,087.20
  4. Step 4: Simplify right side
    192,184.80x = 38,314,261,068.48
  5. Step 5: Solve for x
    x = 38,314,261,068.48/192,184.80
  6. Step 6: Final answer
    x = 199,361.56

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1.5x scale

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.