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Finding the Fourth Proportional to 281,201.36, 388,057.86 and 153,876.96

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Solution

The fourth proportional to 281,201.36, 388,057.86 and 153,876.96 is: 212,350.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,201.36 : 388,057.86 = 153,876.96 : x
  2. Step 2: Convert to fraction form
    281,201.36/388,057.86 = 153,876.96/x
  3. Step 3: Cross multiply
    281,201.36x = 388,057.86 × 153,876.96
  4. Step 4: Simplify right side
    281,201.36x = 59,713,163,800.91
  5. Step 5: Solve for x
    x = 59,713,163,800.91/281,201.36
  6. Step 6: Final answer
    x = 212,350.20

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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.