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Finding the Fourth Proportional to 484,427.96, 668,516.62 and 266,661.80

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Solution

The fourth proportional to 484,427.96, 668,516.62 and 266,661.80 is: 367,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,427.96 : 668,516.62 = 266,661.80 : x
  2. Step 2: Convert to fraction form
    484,427.96/668,516.62 = 266,661.80/x
  3. Step 3: Cross multiply
    484,427.96x = 668,516.62 × 266,661.80
  4. Step 4: Simplify right side
    484,427.96x = 178,267,845,219.12
  5. Step 5: Solve for x
    x = 178,267,845,219.12/484,427.96
  6. Step 6: Final answer
    x = 367,996.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.