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Finding the Fourth Proportional to 403,362.40, 605,043.60 and 166,874.80

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Solution

The fourth proportional to 403,362.40, 605,043.60 and 166,874.80 is: 250,312.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,362.40 : 605,043.60 = 166,874.80 : x
  2. Step 2: Convert to fraction form
    403,362.40/605,043.60 = 166,874.80/x
  3. Step 3: Cross multiply
    403,362.40x = 605,043.60 × 166,874.80
  4. Step 4: Simplify right side
    403,362.40x = 100,966,529,741.28
  5. Step 5: Solve for x
    x = 100,966,529,741.28/403,362.40
  6. Step 6: Final answer
    x = 250,312.20

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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.