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Finding the Fourth Proportional to 403,946.80, 605,920.20 and 403,946.80

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Solution

The fourth proportional to 403,946.80, 605,920.20 and 403,946.80 is: 605,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,946.80 : 605,920.20 = 403,946.80 : x
  2. Step 2: Convert to fraction form
    403,946.80/605,920.20 = 403,946.80/x
  3. Step 3: Cross multiply
    403,946.80x = 605,920.20 × 403,946.80
  4. Step 4: Simplify right side
    403,946.80x = 244,759,525,845.36
  5. Step 5: Solve for x
    x = 244,759,525,845.36/403,946.80
  6. Step 6: Final answer
    x = 605,920.20

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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.