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Finding the Fourth Proportional to 316,908.88, 475,043.43 and 198,663.28

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Solution

The fourth proportional to 316,908.88, 475,043.43 and 198,663.28 is: 297,794.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,908.88 : 475,043.43 = 198,663.28 : x
  2. Step 2: Convert to fraction form
    316,908.88/475,043.43 = 198,663.28/x
  3. Step 3: Cross multiply
    316,908.88x = 475,043.43 × 198,663.28
  4. Step 4: Simplify right side
    316,908.88x = 94,373,685,946.25
  5. Step 5: Solve for x
    x = 94,373,685,946.25/316,908.88
  6. Step 6: Final answer
    x = 297,794.39

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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.