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Finding the Fourth Proportional to 303,630.36, 455,723.31 and 153,973.95

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Solution

The fourth proportional to 303,630.36, 455,723.31 and 153,973.95 is: 231,101.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,630.36 : 455,723.31 = 153,973.95 : x
  2. Step 2: Convert to fraction form
    303,630.36/455,723.31 = 153,973.95/x
  3. Step 3: Cross multiply
    303,630.36x = 455,723.31 × 153,973.95
  4. Step 4: Simplify right side
    303,630.36x = 70,169,517,016.21
  5. Step 5: Solve for x
    x = 70,169,517,016.21/303,630.36
  6. Step 6: Final answer
    x = 231,101.78

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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.