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Finding the Fourth Proportional to 73,683.15, 101,682.74 and 40,149.15

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Solution

The fourth proportional to 73,683.15, 101,682.74 and 40,149.15 is: 55,405.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,683.15 : 101,682.74 = 40,149.15 : x
  2. Step 2: Convert to fraction form
    73,683.15/101,682.74 = 40,149.15/x
  3. Step 3: Cross multiply
    73,683.15x = 101,682.74 × 40,149.15
  4. Step 4: Simplify right side
    73,683.15x = 4,082,475,580.67
  5. Step 5: Solve for x
    x = 4,082,475,580.67/73,683.15
  6. Step 6: Final answer
    x = 55,405.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.