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Finding the Fourth Proportional to 66,269.99, 91,326.61 and 47,374.31

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Solution

The fourth proportional to 66,269.99, 91,326.61 and 47,374.31 is: 65,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,269.99 : 91,326.61 = 47,374.31 : x
  2. Step 2: Convert to fraction form
    66,269.99/91,326.61 = 47,374.31/x
  3. Step 3: Cross multiply
    66,269.99x = 91,326.61 × 47,374.31
  4. Step 4: Simplify right side
    66,269.99x = 4,326,535,133.39
  5. Step 5: Solve for x
    x = 4,326,535,133.39/66,269.99
  6. Step 6: Final answer
    x = 65,286.49

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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.