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Finding the Fourth Proportional to 69,062.53, 103,664.87 and 42,829.46

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Solution

The fourth proportional to 69,062.53, 103,664.87 and 42,829.46 is: 64,288.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,062.53 : 103,664.87 = 42,829.46 : x
  2. Step 2: Convert to fraction form
    69,062.53/103,664.87 = 42,829.46/x
  3. Step 3: Cross multiply
    69,062.53x = 103,664.87 × 42,829.46
  4. Step 4: Simplify right side
    69,062.53x = 4,439,910,403.07
  5. Step 5: Solve for x
    x = 4,439,910,403.07/69,062.53
  6. Step 6: Final answer
    x = 64,288.27

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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.