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Finding the Fourth Proportional to 403,492.20, 605,324.70 and 123,037.80

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Solution

The fourth proportional to 403,492.20, 605,324.70 and 123,037.80 is: 184,583.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,492.20 : 605,324.70 = 123,037.80 : x
  2. Step 2: Convert to fraction form
    403,492.20/605,324.70 = 123,037.80/x
  3. Step 3: Cross multiply
    403,492.20x = 605,324.70 × 123,037.80
  4. Step 4: Simplify right side
    403,492.20x = 74,477,819,373.66
  5. Step 5: Solve for x
    x = 74,477,819,373.66/403,492.20
  6. Step 6: Final answer
    x = 184,583.05

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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.