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Finding the Fourth Proportional to 66,259.96, 91,437.09 and 37,963.82

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Solution

The fourth proportional to 66,259.96, 91,437.09 and 37,963.82 is: 52,389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,259.96 : 91,437.09 = 37,963.82 : x
  2. Step 2: Convert to fraction form
    66,259.96/91,437.09 = 37,963.82/x
  3. Step 3: Cross multiply
    66,259.96x = 91,437.09 × 37,963.82
  4. Step 4: Simplify right side
    66,259.96x = 3,471,301,226.08
  5. Step 5: Solve for x
    x = 3,471,301,226.08/66,259.96
  6. Step 6: Final answer
    x = 52,389.12

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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.