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Finding the Fourth Proportional to 358,971.78, 495,379.90 and 197,826.78

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Solution

The fourth proportional to 358,971.78, 495,379.90 and 197,826.78 is: 273,000.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,971.78 : 495,379.90 = 197,826.78 : x
  2. Step 2: Convert to fraction form
    358,971.78/495,379.90 = 197,826.78/x
  3. Step 3: Cross multiply
    358,971.78x = 495,379.90 × 197,826.78
  4. Step 4: Simplify right side
    358,971.78x = 97,999,410,493.72
  5. Step 5: Solve for x
    x = 97,999,410,493.72/358,971.78
  6. Step 6: Final answer
    x = 273,000.32

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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.