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Finding the Fourth Proportional to 316,436.61, 474,324.43 and 190,076.61

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Solution

The fourth proportional to 316,436.61, 474,324.43 and 190,076.61 is: 284,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,436.61 : 474,324.43 = 190,076.61 : x
  2. Step 2: Convert to fraction form
    316,436.61/474,324.43 = 190,076.61/x
  3. Step 3: Cross multiply
    316,436.61x = 474,324.43 × 190,076.61
  4. Step 4: Simplify right side
    316,436.61x = 90,157,979,694.58
  5. Step 5: Solve for x
    x = 90,157,979,694.58/316,436.61
  6. Step 6: Final answer
    x = 284,916.40

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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.