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Finding the Fourth Proportional to 403,810.10, 605,059.05 and 336,887.90

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Solution

The fourth proportional to 403,810.10, 605,059.05 and 336,887.90 is: 504,784.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,810.10 : 605,059.05 = 336,887.90 : x
  2. Step 2: Convert to fraction form
    403,810.10/605,059.05 = 336,887.90/x
  3. Step 3: Cross multiply
    403,810.10x = 605,059.05 × 336,887.90
  4. Step 4: Simplify right side
    403,810.10x = 203,837,072,730.50
  5. Step 5: Solve for x
    x = 203,837,072,730.50/403,810.10
  6. Step 6: Final answer
    x = 504,784.48

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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.