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Finding the Fourth Proportional to 213,188.17, 319,753.09 and 63,451.57

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Solution

The fourth proportional to 213,188.17, 319,753.09 and 63,451.57 is: 95,168.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,188.17 : 319,753.09 = 63,451.57 : x
  2. Step 2: Convert to fraction form
    213,188.17/319,753.09 = 63,451.57/x
  3. Step 3: Cross multiply
    213,188.17x = 319,753.09 × 63,451.57
  4. Step 4: Simplify right side
    213,188.17x = 20,288,833,656.83
  5. Step 5: Solve for x
    x = 20,288,833,656.83/213,188.17
  6. Step 6: Final answer
    x = 95,168.67

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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.