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Finding the Fourth Proportional to 66,133.48, 91,264.08 and 35,918.68

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Solution

The fourth proportional to 66,133.48, 91,264.08 and 35,918.68 is: 49,567.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,133.48 : 91,264.08 = 35,918.68 : x
  2. Step 2: Convert to fraction form
    66,133.48/91,264.08 = 35,918.68/x
  3. Step 3: Cross multiply
    66,133.48x = 91,264.08 × 35,918.68
  4. Step 4: Simplify right side
    66,133.48x = 3,278,085,285.01
  5. Step 5: Solve for x
    x = 3,278,085,285.01/66,133.48
  6. Step 6: Final answer
    x = 49,567.71

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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.