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Finding the Fourth Proportional to 219,600.78, 329,536.53 and 86,458.38

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Solution

The fourth proportional to 219,600.78, 329,536.53 and 86,458.38 is: 129,740.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,600.78 : 329,536.53 = 86,458.38 : x
  2. Step 2: Convert to fraction form
    219,600.78/329,536.53 = 86,458.38/x
  3. Step 3: Cross multiply
    219,600.78x = 329,536.53 × 86,458.38
  4. Step 4: Simplify right side
    219,600.78x = 28,491,194,534.62
  5. Step 5: Solve for x
    x = 28,491,194,534.62/219,600.78
  6. Step 6: Final answer
    x = 129,740.86

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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.