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Finding the Fourth Proportional to 213,092.10, 319,638.15 and 134,295.30

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Solution

The fourth proportional to 213,092.10, 319,638.15 and 134,295.30 is: 201,442.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,092.10 : 319,638.15 = 134,295.30 : x
  2. Step 2: Convert to fraction form
    213,092.10/319,638.15 = 134,295.30/x
  3. Step 3: Cross multiply
    213,092.10x = 319,638.15 × 134,295.30
  4. Step 4: Simplify right side
    213,092.10x = 42,925,901,245.70
  5. Step 5: Solve for x
    x = 42,925,901,245.70/213,092.10
  6. Step 6: Final answer
    x = 201,442.95

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1.5x scale

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.