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Finding the Fourth Proportional to 403,956.40, 605,059.80 and 359,633.20

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Solution

The fourth proportional to 403,956.40, 605,059.80 and 359,633.20 is: 538,670.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,956.40 : 605,059.80 = 359,633.20 : x
  2. Step 2: Convert to fraction form
    403,956.40/605,059.80 = 359,633.20/x
  3. Step 3: Cross multiply
    403,956.40x = 605,059.80 × 359,633.20
  4. Step 4: Simplify right side
    403,956.40x = 217,599,592,065.36
  5. Step 5: Solve for x
    x = 217,599,592,065.36/403,956.40
  6. Step 6: Final answer
    x = 538,670.99

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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.