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Finding the Fourth Proportional to 7,075.96, 9,765 and 3,932.32

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Solution

The fourth proportional to 7,075.96, 9,765 and 3,932.32 is: 5,426.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,075.96 : 9,765 = 3,932.32 : x
  2. Step 2: Convert to fraction form
    7,075.96/9,765 = 3,932.32/x
  3. Step 3: Cross multiply
    7,075.96x = 9,765 × 3,932.32
  4. Step 4: Simplify right side
    7,075.96x = 38,399,104.80
  5. Step 5: Solve for x
    x = 38,399,104.80/7,075.96
  6. Step 6: Final answer
    x = 5,426.70

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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.