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Finding the Fourth Proportional to 266,361.27, 399,539.16 and 153,969.98

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Solution

The fourth proportional to 266,361.27, 399,539.16 and 153,969.98 is: 230,953.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,361.27 : 399,539.16 = 153,969.98 : x
  2. Step 2: Convert to fraction form
    266,361.27/399,539.16 = 153,969.98/x
  3. Step 3: Cross multiply
    266,361.27x = 399,539.16 × 153,969.98
  4. Step 4: Simplify right side
    266,361.27x = 61,517,034,476.72
  5. Step 5: Solve for x
    x = 61,517,034,476.72/266,361.27
  6. Step 6: Final answer
    x = 230,953.38

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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.