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Finding the Fourth Proportional to 101,781, 140,457.84 and 62,037

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Solution

The fourth proportional to 101,781, 140,457.84 and 62,037 is: 85,611.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,781 : 140,457.84 = 62,037 : x
  2. Step 2: Convert to fraction form
    101,781/140,457.84 = 62,037/x
  3. Step 3: Cross multiply
    101,781x = 140,457.84 × 62,037
  4. Step 4: Simplify right side
    101,781x = 8,713,583,020.08
  5. Step 5: Solve for x
    x = 8,713,583,020.08/101,781
  6. Step 6: Final answer
    x = 85,611.10

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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.