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Finding the Fourth Proportional to 301,280.48, 451,932.48 and 90,918.44

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Solution

The fourth proportional to 301,280.48, 451,932.48 and 90,918.44 is: 136,381.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,280.48 : 451,932.48 = 90,918.44 : x
  2. Step 2: Convert to fraction form
    301,280.48/451,932.48 = 90,918.44/x
  3. Step 3: Cross multiply
    301,280.48x = 451,932.48 × 90,918.44
  4. Step 4: Simplify right side
    301,280.48x = 41,088,996,066.93
  5. Step 5: Solve for x
    x = 41,088,996,066.93/301,280.48
  6. Step 6: Final answer
    x = 136,381.21

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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.