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Finding the Fourth Proportional to 408,245.60, 612,368.40 and 186,629.60

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Solution

The fourth proportional to 408,245.60, 612,368.40 and 186,629.60 is: 279,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,245.60 : 612,368.40 = 186,629.60 : x
  2. Step 2: Convert to fraction form
    408,245.60/612,368.40 = 186,629.60/x
  3. Step 3: Cross multiply
    408,245.60x = 612,368.40 × 186,629.60
  4. Step 4: Simplify right side
    408,245.60x = 114,286,069,544.64
  5. Step 5: Solve for x
    x = 114,286,069,544.64/408,245.60
  6. Step 6: Final answer
    x = 279,944.40

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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.