Home / 445,383.40-668,075.10-129,872.20

Finding the Fourth Proportional to 445,383.40, 668,075.10 and 129,872.20

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Solution

The fourth proportional to 445,383.40, 668,075.10 and 129,872.20 is: 194,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,383.40 : 668,075.10 = 129,872.20 : x
  2. Step 2: Convert to fraction form
    445,383.40/668,075.10 = 129,872.20/x
  3. Step 3: Cross multiply
    445,383.40x = 668,075.10 × 129,872.20
  4. Step 4: Simplify right side
    445,383.40x = 86,764,383,002.22
  5. Step 5: Solve for x
    x = 86,764,383,002.22/445,383.40
  6. Step 6: Final answer
    x = 194,808.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.