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Finding the Fourth Proportional to 657,699.89, 986,863.41 and 455,607.53

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Solution

The fourth proportional to 657,699.89, 986,863.41 and 455,607.53 is: 683,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,699.89 : 986,863.41 = 455,607.53 : x
  2. Step 2: Convert to fraction form
    657,699.89/986,863.41 = 455,607.53/x
  3. Step 3: Cross multiply
    657,699.89x = 986,863.41 × 455,607.53
  4. Step 4: Simplify right side
    657,699.89x = 449,622,395,743.16
  5. Step 5: Solve for x
    x = 449,622,395,743.16/657,699.89
  6. Step 6: Final answer
    x = 683,628.51

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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.