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Finding the Fourth Proportional to 69,128.66, 95,346.62 and 52,133.62

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Solution

The fourth proportional to 69,128.66, 95,346.62 and 52,133.62 is: 71,905.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,128.66 : 95,346.62 = 52,133.62 : x
  2. Step 2: Convert to fraction form
    69,128.66/95,346.62 = 52,133.62/x
  3. Step 3: Cross multiply
    69,128.66x = 95,346.62 × 52,133.62
  4. Step 4: Simplify right side
    69,128.66x = 4,970,764,325.03
  5. Step 5: Solve for x
    x = 4,970,764,325.03/69,128.66
  6. Step 6: Final answer
    x = 71,905.98

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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.