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Finding the Fourth Proportional to 66,153.70, 91,299.93 and 39,296.31

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Solution

The fourth proportional to 66,153.70, 91,299.93 and 39,296.31 is: 54,233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,153.70 : 91,299.93 = 39,296.31 : x
  2. Step 2: Convert to fraction form
    66,153.70/91,299.93 = 39,296.31/x
  3. Step 3: Cross multiply
    66,153.70x = 91,299.93 × 39,296.31
  4. Step 4: Simplify right side
    66,153.70x = 3,587,750,352.26
  5. Step 5: Solve for x
    x = 3,587,750,352.26/66,153.70
  6. Step 6: Final answer
    x = 54,233.56

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1.5x scale

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.