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Finding the Fourth Proportional to 281,190.88, 388,049.68 and 153,866.40

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Solution

The fourth proportional to 281,190.88, 388,049.68 and 153,866.40 is: 212,339.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,190.88 : 388,049.68 = 153,866.40 : x
  2. Step 2: Convert to fraction form
    281,190.88/388,049.68 = 153,866.40/x
  3. Step 3: Cross multiply
    281,190.88x = 388,049.68 × 153,866.40
  4. Step 4: Simplify right side
    281,190.88x = 59,707,807,282.75
  5. Step 5: Solve for x
    x = 59,707,807,282.75/281,190.88
  6. Step 6: Final answer
    x = 212,339.06

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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.