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Finding the Fourth Proportional to 203,811.20, 305,716.80 and 63,569.60

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Solution

The fourth proportional to 203,811.20, 305,716.80 and 63,569.60 is: 95,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,811.20 : 305,716.80 = 63,569.60 : x
  2. Step 2: Convert to fraction form
    203,811.20/305,716.80 = 63,569.60/x
  3. Step 3: Cross multiply
    203,811.20x = 305,716.80 × 63,569.60
  4. Step 4: Simplify right side
    203,811.20x = 19,434,294,689.28
  5. Step 5: Solve for x
    x = 19,434,294,689.28/203,811.20
  6. Step 6: Final answer
    x = 95,354.40

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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.