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Finding the Fourth Proportional to 69,478.34, 103,968.38 and 60,150.45

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Solution

The fourth proportional to 69,478.34, 103,968.38 and 60,150.45 is: 90,009.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,478.34 : 103,968.38 = 60,150.45 : x
  2. Step 2: Convert to fraction form
    69,478.34/103,968.38 = 60,150.45/x
  3. Step 3: Cross multiply
    69,478.34x = 103,968.38 × 60,150.45
  4. Step 4: Simplify right side
    69,478.34x = 6,253,744,542.02
  5. Step 5: Solve for x
    x = 6,253,744,542.02/69,478.34
  6. Step 6: Final answer
    x = 90,009.99

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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.