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Finding the Fourth Proportional to 403,395.40, 605,093.10 and 348,099.40

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Solution

The fourth proportional to 403,395.40, 605,093.10 and 348,099.40 is: 522,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,395.40 : 605,093.10 = 348,099.40 : x
  2. Step 2: Convert to fraction form
    403,395.40/605,093.10 = 348,099.40/x
  3. Step 3: Cross multiply
    403,395.40x = 605,093.10 × 348,099.40
  4. Step 4: Simplify right side
    403,395.40x = 210,632,545,054.14
  5. Step 5: Solve for x
    x = 210,632,545,054.14/403,395.40
  6. Step 6: Final answer
    x = 522,149.10

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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.