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Finding the Fourth Proportional to 388,653.78, 536,476.38 and 227,560.56

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Solution

The fourth proportional to 388,653.78, 536,476.38 and 227,560.56 is: 314,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,653.78 : 536,476.38 = 227,560.56 : x
  2. Step 2: Convert to fraction form
    388,653.78/536,476.38 = 227,560.56/x
  3. Step 3: Cross multiply
    388,653.78x = 536,476.38 × 227,560.56
  4. Step 4: Simplify right side
    388,653.78x = 122,080,865,459.57
  5. Step 5: Solve for x
    x = 122,080,865,459.57/388,653.78
  6. Step 6: Final answer
    x = 314,112.13

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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.