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Finding the Fourth Proportional to 403,486.28, 605,151.50 and 123,031.88

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Solution

The fourth proportional to 403,486.28, 605,151.50 and 123,031.88 is: 184,524.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,486.28 : 605,151.50 = 123,031.88 : x
  2. Step 2: Convert to fraction form
    403,486.28/605,151.50 = 123,031.88/x
  3. Step 3: Cross multiply
    403,486.28x = 605,151.50 × 123,031.88
  4. Step 4: Simplify right side
    403,486.28x = 74,452,926,729.82
  5. Step 5: Solve for x
    x = 74,452,926,729.82/403,486.28
  6. Step 6: Final answer
    x = 184,524.06

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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.