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Finding the Fourth Proportional to 358,782.78, 495,097.92 and 197,628.78

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Solution

The fourth proportional to 358,782.78, 495,097.92 and 197,628.78 is: 272,715.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,782.78 : 495,097.92 = 197,628.78 : x
  2. Step 2: Convert to fraction form
    358,782.78/495,097.92 = 197,628.78/x
  3. Step 3: Cross multiply
    358,782.78x = 495,097.92 × 197,628.78
  4. Step 4: Simplify right side
    358,782.78x = 97,845,597,910.14
  5. Step 5: Solve for x
    x = 97,845,597,910.14/358,782.78
  6. Step 6: Final answer
    x = 272,715.42

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1.5x scale

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.