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Finding the Fourth Proportional to 287,177.20, 430,852.20 and 154,121.20

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Solution

The fourth proportional to 287,177.20, 430,852.20 and 154,121.20 is: 231,228.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,177.20 : 430,852.20 = 154,121.20 : x
  2. Step 2: Convert to fraction form
    287,177.20/430,852.20 = 154,121.20/x
  3. Step 3: Cross multiply
    287,177.20x = 430,852.20 × 154,121.20
  4. Step 4: Simplify right side
    287,177.20x = 66,403,458,086.64
  5. Step 5: Solve for x
    x = 66,403,458,086.64/287,177.20
  6. Step 6: Final answer
    x = 231,228.17

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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.