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Finding the Fourth Proportional to 66,457.44, 91,710 and 36,243

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Solution

The fourth proportional to 66,457.44, 91,710 and 36,243 is: 50,014.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,457.44 : 91,710 = 36,243 : x
  2. Step 2: Convert to fraction form
    66,457.44/91,710 = 36,243/x
  3. Step 3: Cross multiply
    66,457.44x = 91,710 × 36,243
  4. Step 4: Simplify right side
    66,457.44x = 3,323,845,530
  5. Step 5: Solve for x
    x = 3,323,845,530/66,457.44
  6. Step 6: Final answer
    x = 50,014.65

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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.