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Finding the Fourth Proportional to 275,476.47, 413,213.95 and 155,479.02

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Solution

The fourth proportional to 275,476.47, 413,213.95 and 155,479.02 is: 233,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,476.47 : 413,213.95 = 155,479.02 : x
  2. Step 2: Convert to fraction form
    275,476.47/413,213.95 = 155,479.02/x
  3. Step 3: Cross multiply
    275,476.47x = 413,213.95 × 155,479.02
  4. Step 4: Simplify right side
    275,476.47x = 64,246,099,996.33
  5. Step 5: Solve for x
    x = 64,246,099,996.33/275,476.47
  6. Step 6: Final answer
    x = 233,218.10

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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.