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Finding the Fourth Proportional to 403,579.90, 605,360.13 and 123,099.58

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Solution

The fourth proportional to 403,579.90, 605,360.13 and 123,099.58 is: 184,646.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,579.90 : 605,360.13 = 123,099.58 : x
  2. Step 2: Convert to fraction form
    403,579.90/605,360.13 = 123,099.58/x
  3. Step 3: Cross multiply
    403,579.90x = 605,360.13 × 123,099.58
  4. Step 4: Simplify right side
    403,579.90x = 74,519,577,751.75
  5. Step 5: Solve for x
    x = 74,519,577,751.75/403,579.90
  6. Step 6: Final answer
    x = 184,646.41

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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.