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Finding the Fourth Proportional to 66,256.66, 91,435.86 and 36,043.68

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Solution

The fourth proportional to 66,256.66, 91,435.86 and 36,043.68 is: 49,741.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,256.66 : 91,435.86 = 36,043.68 : x
  2. Step 2: Convert to fraction form
    66,256.66/91,435.86 = 36,043.68/x
  3. Step 3: Cross multiply
    66,256.66x = 91,435.86 × 36,043.68
  4. Step 4: Simplify right side
    66,256.66x = 3,295,684,878.36
  5. Step 5: Solve for x
    x = 3,295,684,878.36/66,256.66
  6. Step 6: Final answer
    x = 49,741.19

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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.