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Finding the Fourth Proportional to 235,075.57, 324,410.97 and 138,286.54

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Solution

The fourth proportional to 235,075.57, 324,410.97 and 138,286.54 is: 190,839.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,075.57 : 324,410.97 = 138,286.54 : x
  2. Step 2: Convert to fraction form
    235,075.57/324,410.97 = 138,286.54/x
  3. Step 3: Cross multiply
    235,075.57x = 324,410.97 × 138,286.54
  4. Step 4: Simplify right side
    235,075.57x = 44,861,671,503.43
  5. Step 5: Solve for x
    x = 44,861,671,503.43/235,075.57
  6. Step 6: Final answer
    x = 190,839.36

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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.