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Finding the Fourth Proportional to 65,965.87, 91,017.04 and 39,114.98

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Solution

The fourth proportional to 65,965.87, 91,017.04 and 39,114.98 is: 53,969.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,965.87 : 91,017.04 = 39,114.98 : x
  2. Step 2: Convert to fraction form
    65,965.87/91,017.04 = 39,114.98/x
  3. Step 3: Cross multiply
    65,965.87x = 91,017.04 × 39,114.98
  4. Step 4: Simplify right side
    65,965.87x = 3,560,129,699.26
  5. Step 5: Solve for x
    x = 3,560,129,699.26/65,965.87
  6. Step 6: Final answer
    x = 53,969.27

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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.