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Finding the Fourth Proportional to 403,736.60, 605,386.20 and 166,811.60

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Solution

The fourth proportional to 403,736.60, 605,386.20 and 166,811.60 is: 250,127.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,736.60 : 605,386.20 = 166,811.60 : x
  2. Step 2: Convert to fraction form
    403,736.60/605,386.20 = 166,811.60/x
  3. Step 3: Cross multiply
    403,736.60x = 605,386.20 × 166,811.60
  4. Step 4: Simplify right side
    403,736.60x = 100,985,440,639.92
  5. Step 5: Solve for x
    x = 100,985,440,639.92/403,736.60
  6. Step 6: Final answer
    x = 250,127.04

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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.