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Finding the Fourth Proportional to 266,111.49, 399,223.53 and 76,569.87

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Solution

The fourth proportional to 266,111.49, 399,223.53 and 76,569.87 is: 114,871.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,111.49 : 399,223.53 = 76,569.87 : x
  2. Step 2: Convert to fraction form
    266,111.49/399,223.53 = 76,569.87/x
  3. Step 3: Cross multiply
    266,111.49x = 399,223.53 × 76,569.87
  4. Step 4: Simplify right side
    266,111.49x = 30,568,493,793.04
  5. Step 5: Solve for x
    x = 30,568,493,793.04/266,111.49
  6. Step 6: Final answer
    x = 114,871.00

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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.