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Finding the Fourth Proportional to 657,689.13, 986,846.99 and 455,596.56

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Solution

The fourth proportional to 657,689.13, 986,846.99 and 455,596.56 is: 683,611.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,689.13 : 986,846.99 = 455,596.56 : x
  2. Step 2: Convert to fraction form
    657,689.13/986,846.99 = 455,596.56/x
  3. Step 3: Cross multiply
    657,689.13x = 986,846.99 × 455,596.56
  4. Step 4: Simplify right side
    657,689.13x = 449,604,093,890.35
  5. Step 5: Solve for x
    x = 449,604,093,890.35/657,689.13
  6. Step 6: Final answer
    x = 683,611.87

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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.