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Finding the Fourth Proportional to 69,029.80, 103,314.30 and 48,293.80

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Solution

The fourth proportional to 69,029.80, 103,314.30 and 48,293.80 is: 72,279.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,029.80 : 103,314.30 = 48,293.80 : x
  2. Step 2: Convert to fraction form
    69,029.80/103,314.30 = 48,293.80/x
  3. Step 3: Cross multiply
    69,029.80x = 103,314.30 × 48,293.80
  4. Step 4: Simplify right side
    69,029.80x = 4,989,440,141.34
  5. Step 5: Solve for x
    x = 4,989,440,141.34/69,029.80
  6. Step 6: Final answer
    x = 72,279.51

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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.