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Finding the Fourth Proportional to 403,928.90, 605,893.35 and 341,720.90

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Solution

The fourth proportional to 403,928.90, 605,893.35 and 341,720.90 is: 512,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,928.90 : 605,893.35 = 341,720.90 : x
  2. Step 2: Convert to fraction form
    403,928.90/605,893.35 = 341,720.90/x
  3. Step 3: Cross multiply
    403,928.90x = 605,893.35 × 341,720.90
  4. Step 4: Simplify right side
    403,928.90x = 207,046,420,866.02
  5. Step 5: Solve for x
    x = 207,046,420,866.02/403,928.90
  6. Step 6: Final answer
    x = 512,581.35

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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.