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Finding the Fourth Proportional to 445,206.60, 615,199.86 and 324,137.76

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Solution

The fourth proportional to 445,206.60, 615,199.86 and 324,137.76 is: 447,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,206.60 : 615,199.86 = 324,137.76 : x
  2. Step 2: Convert to fraction form
    445,206.60/615,199.86 = 324,137.76/x
  3. Step 3: Cross multiply
    445,206.60x = 615,199.86 × 324,137.76
  4. Step 4: Simplify right side
    445,206.60x = 199,409,504,572.71
  5. Step 5: Solve for x
    x = 199,409,504,572.71/445,206.60
  6. Step 6: Final answer
    x = 447,903.30

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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.