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Finding the Fourth Proportional to 70,840.73, 97,756.44 and 40,624.61

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Solution

The fourth proportional to 70,840.73, 97,756.44 and 40,624.61 is: 56,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,840.73 : 97,756.44 = 40,624.61 : x
  2. Step 2: Convert to fraction form
    70,840.73/97,756.44 = 40,624.61/x
  3. Step 3: Cross multiply
    70,840.73x = 97,756.44 × 40,624.61
  4. Step 4: Simplify right side
    70,840.73x = 3,971,317,249.99
  5. Step 5: Solve for x
    x = 3,971,317,249.99/70,840.73
  6. Step 6: Final answer
    x = 56,059.80

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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.