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Finding the Fourth Proportional to 410,151.20, 615,226.80 and 129,754.40

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Solution

The fourth proportional to 410,151.20, 615,226.80 and 129,754.40 is: 194,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,151.20 : 615,226.80 = 129,754.40 : x
  2. Step 2: Convert to fraction form
    410,151.20/615,226.80 = 129,754.40/x
  3. Step 3: Cross multiply
    410,151.20x = 615,226.80 × 129,754.40
  4. Step 4: Simplify right side
    410,151.20x = 79,828,384,297.92
  5. Step 5: Solve for x
    x = 79,828,384,297.92/410,151.20
  6. Step 6: Final answer
    x = 194,631.60

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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.