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Finding the Fourth Proportional to 69,078.75, 103,642.44 and 34,043.01

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Solution

The fourth proportional to 69,078.75, 103,642.44 and 34,043.01 is: 51,076.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,078.75 : 103,642.44 = 34,043.01 : x
  2. Step 2: Convert to fraction form
    69,078.75/103,642.44 = 34,043.01/x
  3. Step 3: Cross multiply
    69,078.75x = 103,642.44 × 34,043.01
  4. Step 4: Simplify right side
    69,078.75x = 3,528,300,621.34
  5. Step 5: Solve for x
    x = 3,528,300,621.34/69,078.75
  6. Step 6: Final answer
    x = 51,076.50

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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.