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Finding the Fourth Proportional to 66,700.81, 100,064.60 and 24,581.11

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Solution

The fourth proportional to 66,700.81, 100,064.60 and 24,581.11 is: 36,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,700.81 : 100,064.60 = 24,581.11 : x
  2. Step 2: Convert to fraction form
    66,700.81/100,064.60 = 24,581.11/x
  3. Step 3: Cross multiply
    66,700.81x = 100,064.60 × 24,581.11
  4. Step 4: Simplify right side
    66,700.81x = 2,459,699,164.92
  5. Step 5: Solve for x
    x = 2,459,699,164.92/66,700.81
  6. Step 6: Final answer
    x = 36,876.60

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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.