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Finding the Fourth Proportional to 410,474.39, 615,707.33 and 129,991.64

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Solution

The fourth proportional to 410,474.39, 615,707.33 and 129,991.64 is: 194,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,474.39 : 615,707.33 = 129,991.64 : x
  2. Step 2: Convert to fraction form
    410,474.39/615,707.33 = 129,991.64/x
  3. Step 3: Cross multiply
    410,474.39x = 615,707.33 × 129,991.64
  4. Step 4: Simplify right side
    410,474.39x = 80,036,801,858.23
  5. Step 5: Solve for x
    x = 80,036,801,858.23/410,474.39
  6. Step 6: Final answer
    x = 194,986.11

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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.