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Finding the Fourth Proportional to 410,366.20, 615,549.30 and 129,969.40

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Solution

The fourth proportional to 410,366.20, 615,549.30 and 129,969.40 is: 194,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,366.20 : 615,549.30 = 129,969.40 : x
  2. Step 2: Convert to fraction form
    410,366.20/615,549.30 = 129,969.40/x
  3. Step 3: Cross multiply
    410,366.20x = 615,549.30 × 129,969.40
  4. Step 4: Simplify right side
    410,366.20x = 80,002,573,191.42
  5. Step 5: Solve for x
    x = 80,002,573,191.42/410,366.20
  6. Step 6: Final answer
    x = 194,954.10

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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.