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Finding the Fourth Proportional to 73,872.15, 103,683.45 and 73,872.15

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Solution

The fourth proportional to 73,872.15, 103,683.45 and 73,872.15 is: 103,683.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,872.15 : 103,683.45 = 73,872.15 : x
  2. Step 2: Convert to fraction form
    73,872.15/103,683.45 = 73,872.15/x
  3. Step 3: Cross multiply
    73,872.15x = 103,683.45 × 73,872.15
  4. Step 4: Simplify right side
    73,872.15x = 7,659,319,370.92
  5. Step 5: Solve for x
    x = 7,659,319,370.92/73,872.15
  6. Step 6: Final answer
    x = 103,683.45

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.