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Finding the Fourth Proportional to 604,428.70, 906,643.05 and 446,964.70

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Solution

The fourth proportional to 604,428.70, 906,643.05 and 446,964.70 is: 670,447.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,428.70 : 906,643.05 = 446,964.70 : x
  2. Step 2: Convert to fraction form
    604,428.70/906,643.05 = 446,964.70/x
  3. Step 3: Cross multiply
    604,428.70x = 906,643.05 × 446,964.70
  4. Step 4: Simplify right side
    604,428.70x = 405,237,438,850.34
  5. Step 5: Solve for x
    x = 405,237,438,850.34/604,428.70
  6. Step 6: Final answer
    x = 670,447.05

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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.